The Unexpected Truth Or Dare

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The Unexpected Truth Or Dare

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.My fingers were shaking as I unzipped the dress down to Olivia's waist. I was nervous because she was my sister, because it was all kinds of wrong, because I didn't want to do this, but most of all because I really, deeply wanted to see my sister's breasts. The guys made fun of me as I fumbled with Olivia's bra clasp, but none could know that all my previous girlfriends had had small breasts and most wore elastic bras. I had scant experience with full sized bras and their three little hooks. Eventually though, the black bra popped free, and so did Olivia's breasts.

pushed my boxers completely down and wiggled my legs until they disappeared deeper under the blankets.

REPORT

MrIllusion [url=https://www...'.authors/MrIllusion][/url]

[sri7869]

Super

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sighed as I saw my sister sprawled on the couch. As usual. I was back from my morning half hour run, a run that always followed my daily swimming practice. Olivia barely replied to my hello, her eyes glued to the TV. She was wearing a baggy shirt and a pair of baggy pants. I thought that my sister looked like a fat potato right now. Yet after seeing her in a bathing suit, the few times she had dared to wear one this summer, I knew for a fact that my sister was not fat. Sure she wasn't as fit as I was, nor nearly as fit as my girlfriends had all been. Of course, I had to admit, most of my girlfriends had been swimmers on my team and were remarkably lean and tight. I grinned, thinking about my last girlfriend, Amy. Oh, the feeling of her hard ass in my hands... I still missed that ass!

Shaking my head, I looked at my sister again. She had rather large breasts and I knew she was embarrassed by them. So by trying to hide them under baggy clothes, she ended up looking fat most of the time. I was sure that if she dressed appropriately and went out, she'd find guys easily. She wasn't a beauty queen, and except for her large breasts, her body was ordinary. But she wasn't bad looking either.

As I went up to my room and logged on Facebook, I read a message from my friend Alex. I grinned. Although the message had nothing to do with my sister, I thought about how Alex really liked Olivia. Really liked her. Come to think of it, I suddenly realized that most of my friends had made at least one remark about how hot she was. "Horny males, all of them..." I thought. I just couldn't see it. At the beginning of summer, Alex had said to me that it was because she was my sister. "Nah..." I had replied. "She's just ordinary, and you find her hot just because you hadn't had any girlfriend in months!" Alex had hit me on the shoulder and dropped the subject.

Later, coming back down to fix myself a snack, I looked at my sister again. She was still sprawled on the couch, but had at least changed position. I wondered why she wasn't actually fat. With my shake in hand, I decided to sit down in the couch opposite to hers and really look at her. Olivia was surprised at first, but soon she was staring at the TV again, ignoring me. I smiled into my shake: I just couldn't see it. All I could see was an OK girl with a huge mop of long brown hair. And that's it.

Right now her body was cloaked by the baggy clothes despite the fact that it was a hot late summer morning. Thinking about those times when I had seen her in her one piece bathing suit, I had to admit that Olivia had a decent body. If you liked curves. I liked swimmers' bodies: tall, thin, lean and tight. Small breasts and rounded but firm asses. That wasn't, by any stretch of the imagination, a description of Olivia's body.

But thinking about the bodies of my lean swimmer friends had an impact on my cock. When I felt it beginning to stir, I looked at Olivia to see if I could get up and leave safely. She was still looking at the TV, but as I was about to get up, Olivia stirred, moved around on the couch and stretched her arms above her head. The thin material of her shirt ended up stuck between her thighs and was forced taut by her breasts as we were thrust forward. They really were quite big. Some blood already in my cock and my mind fired up by the memories of the girls on the swim team, I surprised myself by reacting to the sight of my sister's breasts.

When she was done, she looked at me and asked what I wanted. Shaking my head, I said nothing. A minute later I got up and went back to my room. I closed the door and locked it as well. Both our parents were gone for the day, and it wouldn't be the first time that I would masturbate with my sister in the house. I had laughed at my friend Alex's lack of girlfriend earlier this summer, but I realized that it has been six months since I broke up with Amy. Alex had in fact hooked up with a new girl last month, and I was the only one of my friends still single. An entire summer being single! Well, single except for that one night during a competition, with a glorious girl from another state. One night, amazing memories, and nothing more.

As I began searching a for a good porn clip online, I faced the fact that I was in a state of nearly constant arousal. It had even caused a few near misses at the pool. Speedos were perfect for fast swimming, but awful at hiding erections. Even semis. That constant arousal is probably why I had found myself staring at Olivia's stretch... Nothing more. I settled on a clip of one of my favourite pornstars, this time in a threesome. At first, I barely noticed the other girl in the scene, but when she pulled her shirt above her head, just about the same move that Olivia had just made, I clicked. She really looked like Olivia. Not her face, not at all, but the rest of her body... I grinned, still pumping my cock at the sight of the other girl being pumped by the large cock.

But as the scene unfolded, I couldn't help but stare at the other girl, with her generous curves and dancing breasts. When that girl enfolded the guy's cock between her breasts and tittyfucked him, it pushed me over the edge. I exploded and came all over my chest, pumping my own cock for a long time as I stretched my pleasure as much as possible. As I was cleaning myself up, I had to admit that I had never personally felt such a pleasure in my life. None of my girlfriends had had breasts remotely large enough to give me a proper tittyfuck. But that girl had. So did Olivia. Plenty. Shaking my head again, wondering at the intensity of my sexual need, I got up and headed to the shower.

I had hoped that my intense climax and warm shower would take my mind off sex. It didn't. Soon enough my cock was hardening again and as I washed it, it was fully hard mere minutes after my last climax. Being 21, it wasn't the first time such a rapid turnaround happened, but it usually happened while in bed with a girl. Now, just thinking about that other girl's massive breasts around a cock... Damn! I found myself masturbating again, imagining that girl kneeling in front of me, her huge breasts around my cock. To my surprise and horror, in my mind's eye I saw Olivia's face replacing the pornstar's. I could see her large breasts moulding themselves around my cock, her large pink aureolas and stiff nipples moving around and squashed between her guiding hands.

I let go of my cock. Despite my arousal, I was not about to jerk off to my sister's face! Focusing my mind on the pornstar, I grabbed my cock again and felt the surge of pleasure. But seconds later, it was my sister's tits that I was fucking and I let go of my cock again. "Fuck!" I swore out loud. I was laughing at myself despite my frustration when I heard Olivia's voice calling me from the other side of the door. I nearly jumped out of my skin in surprise. In a matter of a single second, I felt surprise, shock, fear, shame and guilt. "What?" I called, seeing my cock still turgid and twitching with every heartbeat.

"That's what I said!" was Olivia's reply. "I heard you swearing and wanted to make sure you were alright."

"Oh... Sorry about that. I'm alright. Never mind..." I replied.

"Did you pull a muscle?" she asked, a playful tone in her voice.

I grinned. Olivia was thinking about an incident that happened two weeks ago, when she herself pulled a muscle in her calf. I had helped her and had even massaged her leg to ease the pain, but all the while I had teased her about not being in shape.

"Never worry about that... I'm in very good shape!" I called back. And it was true. One could do an anatomy lecture using my body.

"Well ok... But remember that you can't work out every muscle at the gym..." was Olivia's intriguing answer.

Looking down at my cock, I grabbed it against and squeezed it hard, feeling it resist the pressure as well as my other muscles. Wait! Was she talking about that? Confused, I asked "What?"

"You know what I mean..." she said. "Every time you come back from your swimming practices, you head to your room and lock the door. It doesn't take a detective to know what you're up to..."

I was stunned. Olivia had never been a shy or prude girl, never afraid to speak up if she had something to say, but this was new. A high pitched "What?" was all I could manage.

"Hahaha! Didn't think I knew about that little pre-shower ritual, did you?" Olivia was laughing, but it was clear that she wasn't laughing at me. She just thought the situation was funny.

I, with my hard cock still in hand, took a chance and said "Oh... So you think I'm done?"

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with my hard cock still in hand, took a chance and said "Oh... So you think I'm done?"

I grinned at the few seconds of silence as I now pumped my cock waiting for I answer. "Well... I did think so, yes. So you're... Right now? Oh Gods!" Olivia cried out before laughing loudly. Again, Olivia wasn't a prude. And while it was the first time such a peculiar exchange had happened between them, it wasn't out of character. "Pervert!" she said, still laughing. I was laughing as well, but my body demanded another form of release. So, for the first time in my life, I masturbated while fantasizing about my sister.

I came hard. Very hard. I imagined her standing right here, naked in her own shower, and looked around the shower trying to find something that she... The shower head! I grabbed it with one hand, thinking that she may have rubbed it against her breasts or even her pussy. Despite having just climaxed minutes ago, I still sent a few jets of sperm on the shower curtain, whispering Olivia's name.

Now spent, I didn't know exactly how I felt about all of this. A towel wrapped around my waist, I got out of the bathroom and saw Olivia in her room. She looked at me with a genial smile, which I returned. We were cool. But as I turned and walked to my room, I heard her say "Naughty boy...". I grinned again.

During the last few weeks of summer, before we both had to go back to college, nothing else happened, nor did we talk about that incident. Instead, we reverted to more classic arguments about health and about how Olivia was not taking care of herself properly. During the same week we left the family house, Olivia for her second year of college and I for my third. While at college, we didn't see each other all that often. We were no more than a three hours drive apart, but very rarely made special trips just to see each other. We met a couple of times when we both happened to come back home for a week-end, but no more.

That was why I was really surprised when Olivia called me in early October. She began by making small talk, which was weird in itself, but soon I heard her voice cracking. Something was up. And despite the fact that we weren't all that close, my big brother instincts kicked in. I asked if a guy was responsible for her troubles. I was wrong. In fact, it was the very opposite.

Olivia hadn't had a steady boyfriend for a long while now, but for some reason had let her college friends believe that she'd had one back home all summer long. I was shaking my head, smiling slightly, wondering why Olivia hadn't simply told the truth. But I knew, being in a similar situation, that it wasn't all that easy for college students to admit that we were single. Olivia didn't completely fall apart on the phone, nor did she begin crying in earnest. But it was clear that she was feeling bad. Really bad.

Soon though, it became evident that her loneliness wasn't the real problem. There was a big party coming up next week and everybody would be accompanied. This was a really big thing in her faculty, and it would be strange if her boyfriend didn't show up. Olivia finally asked me if one of my friends would accept to play the role of her boyfriend for the night. My immediate reply was "Yes, of course!"

But then, as I thought about it, most of my friends were in steady relationships this semester. Alex would probably jump at the chance to play Olivia's boyfriend, but his jealous girlfriend would probably have a fit. Five minutes later, I could hear Olivia cracking up again at the thought of not even being able to have a fake boyfriend.

But then I spontaneously said what neither of us had even considered "Well, I could do it!"

"What? Play my boyfriend?"

"I'm sure it will be very weird, but we're not talking about a week-end in a motel, or share a bed... Just an evening of dancing in public. And judging by what you said earlier, it's going to be a rather formal thing, so nothing to worry about, right?"

Olivia paused, then said "Are you sure?"

"Why not? Isn't that what big brothers are for?" I asked.

"Playing at being their little sister's boyfriends?" Olivia replied, laughing.

"No silly! Helping their little sisters, whatever the reason!" I laughed with her.

A few minutes later we hung up, and I was still smiling. I was glad that I had found a way to avert a crisis for my sister, and it would probably do me good to spend an evening dancing. Even if it was with my sister. We both enjoyed dancing and I knew she was a pretty good dancer. It had been a while since I had, so I looked forward to it. We were past the age where Olivia's friends would force us to kiss or worse, so nothing could go wrong. Right?

Well, nothing did go wrong until Olivia and me moved outside with a group of her friends. And got slightly drunk. The simple plan of a nice and rare evening of dancing with my sister changed. Everything had gone smoothly until that point and nobody suspected a thing. Olivia's facebook profile didn't have a single picture of me, and she had never gone around showing my picture for no reason. So we were pretty safe. Sure we spent more time holding each other's hands and dancing very close during that night than during the last few years combined, but so what?

In fact, as the evening turned into night, I had to admit that this night of dancing with my sister was one of the best nights I'd had in months. Not only was it fun, it was great. Before college separated us, Olivia and I had danced together quite a lot, practicing the steps we had learned at our respective colleges. But once I moved away during the fall and winter, we didn't have that connection and our relationship withered. But tonight, it seemed like all the habits and patterns we had developed as brother and sister through the years had evaporated. I was having fun just talking with my sister-girlfriend, was having a blast dancing with her and, I had to admit as well, looking at her

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Olivia hadn't had a steady boyfriend for a long while now, but for some reason had let her college friends believe that she'd had one back home all summer long. I was shaking my head, smiling slightly, wondering why Olivia hadn't simply told the truth. But I knew, being in a similar situation, that it wasn't all that easy for college students to admit that we were single. Olivia didn't completely fall apart on the phone, nor did she begin crying in earnest. But it was clear that she was feeling bad. Really bad.

Soon though, it became evident that her loneliness wasn't the real problem. There was a big party coming up next week and everybody would be accompanied. This was a really big thing in her faculty, and it would be strange if her boyfriend didn't show up. Olivia finally asked me if one of my friends would accept to play the role of her boyfriend for the night. My immediate reply was "Yes, of course!"

But then, as I thought about it, most of my friends were in steady relationships this semester. Alex would probably jump at the chance to play Olivia's boyfriend, but his jealous girlfriend would probably have a fit. Five minutes later, I could hear Olivia cracking up again at the thought of not even being able to have a fake boyfriend.

But then I spontaneously said what neither of us had even considered "Well, I could do it!"

"What? Play my boyfriend?"

"I'm sure it will be very weird, but we're not talking about a week-end in a motel, or share a bed... Just an evening of dancing in public. And judging by what you said earlier, it's going to be a rather formal thing, so nothing to worry about, right?"

Olivia paused, then said "Are you sure?"

"Why not? Isn't that what big brothers are for?" I asked.

"Playing at being their little sister's boyfriends?" Olivia replied, laughing.

"No silly! Helping their little sisters, whatever the reason!" I laughed with her.

A few minutes later we hung up, and I was still smiling. I was glad that I had found a way to avert a crisis for my sister, and it would probably do me good to spend an evening dancing. Even if it was with my sister. We both enjoyed dancing and I knew she was a pretty good dancer. It had been a while since I had, so I looked forward to it. We were past the age where Olivia's friends would force us to kiss or worse, so nothing could go wrong. Right?

Well, nothing did go wrong until Olivia and me moved outside with a group of her friends. And got slightly drunk. The simple plan of a nice and rare evening of dancing with my sister changed. Everything had gone smoothly until that point and nobody suspected a thing. Olivia's facebook profile didn't have a single picture of me, and she had never gone around showing my picture for no reason. So we were pretty safe. Sure we spent more time holding each other's hands and dancing very close during that night than during the last few years combined, but so what?

In fact, as the evening turned into night, I had to admit that this night of dancing with my sister was one of the best nights I'd had in months. Not only was it fun, it was great. Before college separated us, Olivia and I had danced together quite a lot, practicing the steps we had learned at our respective colleges. But once I moved away during the fall and winter, we didn't have that connection and our relationship withered. But tonight, it seemed like all the habits and patterns we had developed as brother and sister through the years had evaporated. I was having fun just talking with my sister-girlfriend, was having a blast dancing with her and, I had to admit as well, looking at her.

When I had picked her up at her apartment she had already been wearing her evening gown. Two things became immediately evident. First, it was a dancing gown. I knew that for most people there, the dancing part was not important. But I was really glad to see that my sister intended to dance. But second, Olivia was hot. Raging hot. I was actually shocked. After a few minutes of looking at her and stealing unbrotherly glances, I couldn't detect any physical changes. It didn't look like she had lost weight or started going to the gym. But damn! I definitely felt lucky.

Spending the entire night dancing with my sister in great dancing form and full feminine bloom was truly enjoyable. At one point I got lost in the moment and slapped her ass after she completed a great spin move. I froze immediately, but laughed as she shot me a brilliant grin. At the beginning of the evening, we wordlessly agreed to skip the slow dances, but by eleven, we actively sought each other out in the crowd if we weren't already side-by-side. For the past two weeks, I had thought about this evening as nothing but a generous, but boring, way to help my sister with her peculiar plan. By midnight, as I was leaving the great room with a bunch of Olivia's friends, I was extremely glad to have been wrong.

And that's when things changed. Sitting on the clean grass, well away from the hall, the group was finally finding some quiet to enjoy the night. Olivia and I had spent so much time dancing that we hadn't drunk too much. Not so for her friends. Most of them, Olivia's four friends and their dates, were already pretty drunk. Holding Olivia's hand in my own, I didn't think too much about it and joined the drinking. Following my lead, so did Olivia. The mere fact of being tipsy could have sparked some awkward situations for our fake couple, but probably nothing serious. A truth or dare game which began before either of us could even try to say no, well, that was an altogether different thing.

"Let's start easy. When was the first time you kissed?" asked Jenny to Christopher.

He replied "That's easy. Truth. Under the bridge right behind us, last year at Halloween. Now, Mark, are you and Ginger already having anal sex?"

At that question, six people burst into laughter, including Christopher, Mark and Ginger, two people froze with their mouths opened, and Olivia and I squeezed each other's hand hard. Clearly, this wasn't going to be a PG13 kind of game. And Mark made it pretty clear. "Fuck off! Dare!"

"Really?" asked Christopher. "Ok then. Kneel behind Ginger and grab both her breasts in front of us. I wanna see these puppies dance!" Most of the group laughed again, and I saw that even Olivia was laughing. Wasn't she aware that soon it would be our turn? Shit!

As Mark executed the dare, and Ginger didn't seem all that phased about it, I began to understand that Olivia's friends were quite open about sex. And maybe that was why her being single was an issue. In any case, it would not help us now. Then again, seeing Ginger's "puppies" dancing was quite a sight and it stirred my cock. High spirits, slightly drunk edge and great breasts dancing? More than enough for long-time abstinent guy.

The questions, answers and dares passed around and even though Olivia and I got a big share since nobody knew me, the siblings decided to play it safe and always give true answers. Well, false true answers, of course. We were making our stories up as we went along, and, of course, got teased about it. One of the girls had no top at this point and one of the guys had shown his erect cock to the group. Olivia and I, truth freaks, had been spared and the others had begun to notice. We probably could have endured the teasing and kept going though.

Sadly, at one point I forgot about one of our previous lies and told something that made it clear that I had been lying. Ginger and Jenny stood up and screamed "Liar!" pretty loudly. Olivia was laughing hard, probably a bit drunker than she had realized. Jenny, the pretty and small-boned blonde who had asked the question, said "It's now time for a dare!" Kneeling in front of me, she leaned in very close and said "Afraid of what aunty Jenny will ask you to do?"

"No, give it your best shot!" was my reply. It was what I would have said in any other truth or dare game, but I bit my tongue as I realized it may not have been the best option here and now.

"Oooh... Confident aren't we?" was Jenny's slightly slurred reply. "Well then, take that top off, I wanna see those pecks and abs of yours..."

I was glad. I was afraid she would have made Olivia and I kiss. Hopefully nobody had noticed that we hadn't. I got up and even made a little strip show out of it, and noticed that Olivia was clapping and laughing with the other girls.

"Damn Olivia!" still Jenny. "Lucky girl you! Wow! And look at that, em... hump there!" she said, looking at my crotch where my obvious erection was tenting my pants. While everybody laughed, Olivia got up and rubbed my chest and abs, even going slightly under my belt, which made everybody laugh even more. Jenny said "Wo there cowgirl, wait 'til you get him in bed!"

I was glad the focus of attention was shifted away from me again. But shit was I hard! Hard and excited. And with no prospect of relief tonight. A few minutes later, when asked about their first meeting, Olivia refused to reply. Later she would tell I that it was because she didn't want to say that it happened 20 years ago, not realizing that she could simply have lied. Christopher, whose busty girlfriend confirmed that he liked large breasts, began by asking Olivia to remove her top. But before she could, Ginger said "Hey! I haven't seen these two kiss all night long!" After everybody corroborated, Christopher reluctantly agreed to change my dare. "Kiss your boyfriend for God's sake!"
REPORT
MrIllusion
MrIllusion

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And so it came to that. It was all over, the game was up and Olivia would have to deal with the consequences of her decision and face her friends. But when I turned towards my sister, I had a fraction of a second to realize that Olivia was going to kiss me. Her lips were on mine, her tongue against mine and for a long moment we kissed as passionately as we could.

When we stopped, the group, who knew nothing of the strangeness of what just happened, simply waited for Olivia's question, which led to dare and ended up with Ginger dancing topless for thirty seconds. While everybody was watching her, Olivia leaned into me and whispered "I'm sorry I kissed you... Just hang on for a few more questions and we'll try to put an end to this game. I'll owe you a big one! Thanks again, lover!" she was laughing as she pulled away, very drunk.

I nodded and brought my attention back to Ginger. But my mind was still reeling from the kiss, and how good it had been. My sister was a great kisser. Shit! Damn her! Why had she gone all in with that kiss? I had already been hard, and now that kiss, and Ginger's dance... It had all sent me in a state of serious sexual need. A few more rounds later, Olivia leaned in and whispered "You're a good kisser! I didn't know that!" I grinned, but inside I was all torn up.

Olivia was also still thinking about that kiss. When my turn came up, I decided to risk it and go for a dare. This time it was another guy, whose name I hadn't properly registered yet, who asked me to remove Olivia's top and bra. I laughed, but turned to look at Olivia. We shared a quick look before she shrugged and turned around.

My fingers were shaking as I unzipped the dress down to Olivia's waist. I was nervous because she was my sister, because it was all kinds of wrong, because I didn't want to do this, but most of all because I really, deeply wanted to see my sister's breasts. The guys made fun of me as I fumbled with Olivia's bra clasp, but none could know that all my previous girlfriends had had small breasts and most wore elastic bras. I had scant experience with full sized bras and their three little hooks. Eventually though, the black bra popped free, and so did Olivia's breasts.

I tried to hide it, but when I looked at her breasts, the ones I was supposed to know very well by now, I was floored. Her one piece bathing suit hadn't prepared me for Olivia's breasts. Not porn, not erotica, not glamour models. Nothing. Fucking hell! I was as impressed as the rest of the guys, and it took me a long time before I could tear my eyes away from them. When I did, looking at Olivia, she was grinning, barely shy at all and clearly enjoying the attention.

Three girls and four guys were now topless, and the next dare turned the heat up another notch. Not only had partners been asked to perform sexually explicit acts, Ginger had even sucked her boyfriend for thirty seconds, but suddenly Jenny asked Olivia to suck on Christopher's cock. His own girlfriend only laughed with the rest of them. Most of the group were looking at me, but I had absolutely no idea how to react. I was supposed to play the slightly put off guy, a bit jealous but not too much given the general atmosphere, but I was also seeing my sister sucking a cock and most importantly, I was extremely turned on by the sight. I had no idea how I was reacting and thought myself lucky that most of them were too drunk to really care.

Ginger saw me touching my cock through my pants and said it out loud. "Oooh! He wants his fair share! Ok then! I want that the next dare on me be that I have to suck Ethan's cock!" Shouts of laughter burst out at this strange request, and one minute later I was being expertly sucked by this intense girl. I lasted the thirty seconds, which seemed to be the designated length for the dares, but fifteen seconds more I would have burst a nut in her mouth. Looking at Olivia as I was being sucked was, so far, the strangest experience of the night. Oh, that and the kiss. Shit, what a fucked up night!

And it was only going to get weirder. When she pulled away from my cock, Ginger pulled my pants all the way down, and so I became the second guy to be fully naked. A few minutes later, the first time I saw a cock enter a pussy, between boyfriend and girlfriend, of course, I began to be really nervous. Olivia looked at me and I saw that she was scared as well. She tried to tell them that it had gone far enough, that she didn't want me to think that they were all perverts. "Sush!" Christopher replied, his eyes still glued to the penetration. "You've seen and done much worse than this my dear! If he doesn't know that about you, it's high time he did!"

Olivia looked at me with eyes wide opened, both because her attempt had failed and because I was, in fact, learning a lot about my little sister. But knowing that she had likely participated in an orgy was one thing. Having sex with her, was quite another. I leaned closer to her and whispered "We can leave whenever you want... This is getting crazy, especially for us."

"I know! It rarely goes this far, you have to believe me!" was her reply, whispered in my ear as well.

But despite the words, we were leaning against each other and I could feel her naked breast against my equally naked torso. I was also extremely aware that her hand on her own thigh was only inches away from my hard cock. And despite the four other sexually attractive girls here, my mind was focused on my sister. We knew we had to get up and leave, even if it meant breaking up the little private party, but neither of us moved or said anything. The only thing I could do was to always tell the truth. But with the late hour and the alcohol, I made another mistake and had to take a dare. "Suck Olivia's tits!" was Jenny's order.

Last time I had turned towards Olivia after a crazy dare, she had leaned in and kissed me as if it was the most natural thing in the world. This time though, she seemed afraid. She was laughing, but I could see that she was nervous and really didn't want that. We looked at each other, grinning to keep the pretence up, but I waited for her signal. When she nodded very slightly, holding her two breasts in either hand, my stomach lurched. This was nearly as wrong as it got. But before I could fully form the intention of leaning in, I saw myself doing it, my mouth wide open until I sucked my sister's nipple deeply inside my mouth.

At first I managed to restrain myself and mainly made a show of it. But then I decided to enjoy it a bit more. Just as I closed my eyes to focus entirely on the direct physical sensations, I felt Olivia's hand on my cock, squeezing the base. One of the biggest shocks of the evening. So wrong, so terribly good. I wasn't expecting her to do that at all, but as I knew that thirty seconds was pretty short to enjoy such breasts, I abandoned any and every restraint and reserve I might have had.

I had never sucked on such a large breast before, and it had never felt like I was missing something. But now, dear Gods in heaven, I was overwhelmed. Smaller breasts truly are soft and pliable and smooth and gifts from nature. But these... Oh my Gods. These were beyond imagination. I had never thought that big breasts could feel so differently than smaller ones. Sure I had expected the size, but it seemed like it was so much more.

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Last time I had turned towards Olivia after a crazy dare, she had leaned in and kissed me as if it was the most natural thing in the world. This time though, she seemed afraid. She was laughing, but I could see that she was nervous and really didn't want that. We looked at each other, grinning to keep the pretence up, but I waited for her signal. When she nodded very slightly, holding her two breasts in either hand, my stomach lurched. This was nearly as wrong as it got. But before I could fully form the intention of leaning in, I saw myself doing it, my mouth wide open until I sucked my sister's nipple deeply inside my mouth.

At first I managed to restrain myself and mainly made a show of it. But then I decided to enjoy it a bit more. Just as I closed my eyes to focus entirely on the direct physical sensations, I felt Olivia's hand on my cock, squeezing the base. One of the biggest shocks of the evening. So wrong, so terribly good. I wasn't expecting her to do that at all, but as I knew that thirty seconds was pretty short to enjoy such breasts, I abandoned any and every restraint and reserve I might have had.

I had never sucked on such a large breast before, and it had never felt like I was missing something. But now, dear Gods in heaven, I was overwhelmed. Smaller breasts truly are soft and pliable and smooth and gifts from nature. But these... Oh my Gods. These were beyond imagination. I had never thought that big breasts could feel so differently than smaller ones. Sure I had expected the size, but it seemed like it was so much more.

I was leaning sideways above Olivia's lap, with my hand on the other side of her thighs, and so had only one hand free. But I was making the most of it, guiding and pushing her breasts on, against and into my mouth, holding it up as my tongue twirled around the large aureola, squeezed its flesh hard and pulled it towards me... I had to discover everything about such breasts in thirty seconds. It wasn't enough, not nearly enough.

When I heard one of the guys shouting "30 seconds!", I reluctantly pulled away, but not before pulling Olivia's nipple as far as I could before letting it snap back. Looking up at her, still overwhelmed by the feelings and stunned by her hand, I suddenly saw that it was not her hand on my cock. It was Ginger's. As if I could still be shaken by this evening, I felt a pulse of anguish blooming deep inside my belly. Olivia was looking down at me, her cheeks flushed and with a smile I couldn't interpret. As I sat down next to her again, forcing myself to thank Ginger for the added bonus, I tried to focus. This was going way too far. It had to stop.

And thankfully it did. A few minutes later, we saw the bright flames of a huge bonfire and that was the signal for the last part of the night. About half of our little group were happy about that, and the other half wanted to keep playing. Probably until it turned into a full blown orgy. Luckily for us, the first half won and we all got up to walk towards the fire. Olivia found and grabbed my hand as we walked side by side, a habit we picked up extraordinarily fast. With the others far enough from us, I told her "Listen Olivia... I'm so sorry. I thought it was your hand on my... And then I took that for a signal that..., well that you..."

"That I was happy that my big brother was sucking my breasts?"

"Oh crap... I'm so sorry." I truly felt bad and stopped walking.

"It's alright Ethan..." she said, and laughed. "Don't take it too seriously. It was very strange, but it wasn't all that bad..." she finished with a small but brilliant smile. "Come on, we should catch up with the others. Before we did, she leaned in again and asked "Ethan, were mine your first big breasts?" I could only nod, not sure about how to react, and I had no idea how to interpret Olivia's small smile.

There was a strange dance... thing, for lack of a better word, around the bonfire. All of Olivia's friends were there and they were playing a game linked to some of their classes. I had no idea what was going on so I stood on the side, watching the show. Or, rather, watching Olivia. She was in a very, very good mood and my guess was that she was enjoying this evening as much as I was despite the utter awkwardness. I could only imagine our discomfort the next time we were going to meet at home. Shit, that was going to be strange...

As I laughed, enjoying the lust-filled and alcohol hazed moment as much as I could before clarity would make everything bad, I realized that I had forgotten something very, very important. On the phone, while planning this evening, we decided that I could not spend the night there for obvious reasons. So we invented a very early meeting for me tomorrow morning.

And the plan, damn it, had been for me to leave at around 11. It was now... shit; it was now almost 3 am and I was both too tired and too drunk to drive. Which meant that I would have to share a bed with Olivia. A bed in a room for four people. There's no way I was going to be able to sleep on the couch. Shit. And, watching Olivia's breasts move under her dress, I knew I was in trouble. Deep fucking trouble.

When the dance stopped, Olivia found me and I could see that she was completely exhausted. She grabbed me in a big hug, thanked me again for the evening and kissed me on the neck. "Olivia. I can't go back home now!"

"Oh. Oh! Shit!" and then, to my surprise, she laughed. "Don't worry big brother. I'm not going to be much fun anyway tonight. I'm completely drained... Let's go to bed."

She grabbed my hand again and guided me towards the room. When we got in, Mark and Ginger were already there. Shit. It was obvious that these two were going to have sex right there beside us. And so, as I was trying to adjust to the strange feeling of sharing a bed with my sister wearing nothing but our underwear, I heard them beginning to kiss. Wetly. I turned my back to them, but that meant that I ended up face to face with Olivia. I could see much in the darkness but could stil imagine her naked breasts from earlier and the stunning lingerie she had on.

I expected her to already be asleep; she had needed help to disrobe because she was falling asleep in my arms. Instead she was looking back at me, with her eyes half closed but with a lazy smile on her face. She moved a bit closer, her nose nearly touching mine, and whispered "I was pretty sure this would happen... Again, I'm sorry Ethan. Thanks again, and I'm going to make it up to you." I didn't know what to say, and suddenly we heard Ginger moaning.

She then laughed and said "Oh wow... I'm sorry guys but we couldn't control ourselves and Mark's tongue's really good!" Then, after a pause and another moan "Aren't you guys horny as fuck? I'm sure Ethan can't wait to put that cock of his inside you Olivia!"

And so we were trapped. I groaned, not able to think of anything to say. Olivia pulled the blankets above our heads and whispered "Wanna fake again? Think we can make them believe that we're fucking? No need to do it a long time... I'm sure you'd make me cum in no time anyway." Olivia stopped, then added "Sorry... I think I'm a lot drunker than I thought. Sorry."

"Stop apologizing and start moaning!" I said, and it made her laugh.

For the next five minutes or so, which felt like an eternity, Olivia and I faked having sex. And it was the most harrowing experience of the evening, by far. Maybe of my entire life. Mostly or entirely under the covers, wearing nothing but boxers and lingerie, we moved around, jumped, shook the bed and moaned, less than a foot apart. Each on our sides, face to face, we inevitably touched and grabbed each other.

First our legs touched, then our arms, then her hand touched my belly, mine her thigh, then one of her legs slipped between mine and I squeezed her there. When Olivia said "Fuck me, fuck me good..." I moaned as well, my cock now painfully hard. When Olivia's hand touched it, skin to skin as it had gotten out of my boxers in the ruckus, her breath caught in her throat. She transformed the sound of surprise into a long moan, and added "Shit that's good... Take me deeper Ethan."

My mind knew it was fake, but my body didn't care. It was overwhelming to hear my sister moaning my name, asking me to fuck her deeper. Part of me wanted nothing more than to rip her panties off and fuck her deeply, and another was flabbergasted and overwhelmed by this whole sordid night of feigned sex with my sister. when she moved a bit closer, I placed my arm around her body and pulled her against me.

My cock was pushing against her belly and my hand slid down to her ass, pulling her sex as close to me as possible. As she moaned, I relaxed my hold and held my breath. What the fuck was I doing. This was all fake! Seconds later I had found her ear and whispered, very softly, that I was sorry. She replied that it was ok, that I was a guy and that it was her fault. She was sorry.

But she was also breathing hard, hadn't moved away from me and was also holding me against her as we ground each other. When she swung her leg above mine and pressed her pussy against my cock, it was my turn to lose control of my breathing. I froze, or at least the top part of my body froze. My hips twisted and pushed hard against her. My freed cock was right against her panties. Her thin, very hot and very wet panties.

As my mind was trying to makes sense of this, was she simply responding to the physical roleplaying, or was she genuinely... our very close neighbours both pretty much climaxed at the same time. As they were enjoying their very real pleasure, Olivia decided to fake hers, and I joined in. Pushing my cock unequivocally against my sister's pussy, I began moaning and groaning, faking an orgasm I so dearly wanted for real. Shit! I wanted nothing more than to be balls deep in my sister's pussy, shooting my sperm inside her. Fuck!

We were both breathing very hard, our eyes locked into each other, as we disentangled ourselves slowly. It seemed to me that she didn't want to pull away. When I stopped my arm, preventing her slow movement away from me, she grinned. And kissed me on the lips. We stayed that way for avery long minutes, embraced and with my cock against her panties. Without moving. At all. We exchanged a few witty words with Ginger and Mark, then heard them fall asleep. "I'll make it up to you Ethan... I'm so sorry about all this." But she was grinning now, clearly not sorry.

"Don't worry about it sis..." I said, sneaking a peak down where her lace-wrapped breasts pressed against my chest. "It's really not that bad, and I'm learning new things about what feminine beauty is all about."

She grinned again, and kissed me a second time.

Eventually we fell apart, really exhausted and still drunk. Her more than me. As she began to snore lightly, her head on my chest, I knew I had to be very careful. I had no idea what tomorrow morning would bring, how Olivia would react in the light of day and without alcohol to cloud her judgment. I fell asleep with these worries in mind...

I woke hours later with a raging erection. Judging by the light coming from around the blinds, it must be very early. Maybe six o'clock. My bladder was just about as filled as my cock, and I knew I had to manage to make my erection go down before going to the bathroom. I had been sleeping on my back and Olivia was on her side, facing away from me. I knew that if I lifted the blankets I could see her sexy back and nice ass, barely covered. I didn't. I wanted my cock to go down, not get any harder.

It was hard, but thinking about politics, my cat, my dead grandmother all helped. A few minutes later I judged that I could make it to the bathroom and piss. And I did. I was still semi hard when I got back under the blankets, and Olivia hadn't moved. I was still very tired, but memories about what had happened in the last six hours were still fresh. And vivid. I had sucked her breasts! Shit! Her incredible breasts! Damn it that had been good. Imagining my cock wrapped between them... Fuck! Stop it!

I laughed softly, shaking my head. And then I thought about the very intimate moment after our faked sex, when she had kissed me for no reason. That had been remarkably good as well. Why? Why was it that this particular moment shone the brightest? Throwing caution to the wind, I turned on my side and spooned her. Shamelessly, I nestled my cock between her asscheeks and even slipped my hand under her arm to grab her breast. Her naked breast. I would learn later that sleeping with a 32B bra isn't a problem, but with a bigger underwired bra, it's really painful. Olivia must have taken it off while sleeping. I buried my face in her hair, taking a deep breath and enjoyed this exceptional closeness.

I really wanted nothing more than this. Truly! But my body had other ideas. Soon I was massaging her breast and pushing my cock against her very gently. Olivia didn't budge, moan or otherwise react to my actions. My cock, hard once more and letting me know that it had been frustrated many times in the past 12 hours, was now pushing out of my boxers. When I felt it touching Olivia's panties, I closed both my eyes and my hand around her breast. Still no movement from her. Not even a change in her breathing.

Part of me knew that I was now running down the slope I'd been afraid of slipping on all evening and night long. Pushing my cock against my sister's ass, I didn't care anymore. Sleepiness, lingering alcohol haze and dominating sexual need totally destroyed that part of me. Right now I was barely more than a male holding a damned sexy, near naked woman in my arms. How the fuck had I never seen it? How could I have missed how hot Olivia was, with those amazing curves? All my friends had told me, but taboo had masked it from me. Briefly thinking about my previous girlfriends, they all seemed like barely pubescent girls to me now. Olivia was young, but she was all woman, all lust, all sex.

I was going crazy for her, and the fact that she was my sister was both a turn off and a thrill at the same time. Had I met a girl like her at a party, would I have clicked? Would I have opened my eyes to voluptuous femininity? I didn't know, didn't care. Taking a deep breath I smelled her scent, squeezed her breasts and pushed my cock against her once more. Leaving her breast for a few moments, I pushed my boxers completely down and wiggled my legs until they disappeared deeper under the blankets.


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