Incest Back Seat Sister Slip

[neerathemall]

I just shrugged... not sure how else to respond.

She was so wet that my cock had slid smoothly and easily inside her.

Was she wet because of sitting in my lap?

Had she been stimulating herself all this time?

These and many other questions swirled inside my head, but at the centre of my attention was her remaining frozen, with my cock deep inside her.

This was surreal!

It was so cool she hadn't freaked out! She hadn't moved away. She seemed to be pondering what to do next.

I didn't mean to, but my cock twitched inside her... making her moan.

"Are you okay?" Baker asked, concerned for my hot sister.

"Yeah, yeah, it's just a little leg cramp," she dissembled, as she was still looking back at me, then she moved her ass up and off of me... squirming around a little to get comfortable, which meant rubbing herself some more against my cock, which was now resting between her pussy lips, but no longer inside her hot hole.

I tried to appear impartial while she seemed to be processing what had just happened and what to do next... but she only asked, in a tone that indicated the other decision had now been made, "So you guys are all coming to the party with me, yes?"

"Do we have a choice?" Baker asked.

"Of course you do! You can either do as I say... or you can do what I say," my sister shrugged as she moved back a bit, and my cock head slipped back inside her.

Was that on purpose?

Or by accident?

The uncertainty was turning me into a horny mess.

I was desperate to fuck her... yet I wanted her to be the one to initiate it... although I already had initiated it when I positioned my cock at her pussy just as she was sitting back down.

I was stressed that I was committing incest... no matter that it was an accident on her part after a stupid, rash decision on my part.

I was worried about getting caught by my buds with my dick inside my own sister... which would be pretty damn hard to explain.

"Then my choice is to do whatever you say at all times," Baker said, drooling over my sister, my cock only about two inches inside her. Which was way better than zero inches!

"Oh, how sweet you are," she purred in full flirtation mode, letting out a soft moan as she once again leaned forward, sticking her tits in his face... my cock now just barely inside her.

A mixture of spontaneity... hormones... curiosity... mischief... lust... I made the decision for both of us, and I raised my hips and slid my cock all the way back into her pussy.

My sister froze again... again with my entire cock inside her... and she looked back at me with an expression that might mean anything... shock... curiosity... confusion... intrigue... is there a name for a facial expression that encompasses all those feelings into one? There should be, since I was looking at it!

I imagine it was similar to the look I'd had when she first grabbed my cock in our living room... God, that seemed so long ago now... when in reality it was only twenty-ish minutes ago.

Suddenly feeling guilty for what I was doing... I slipped out, and lowered myself back to my seated position.

Time stood still... although it was likely only a few seconds... before she turned away from me.

Feeling guilty and disappointed, I went to tug my costume back down over my hard cock, but Shayla reached her left hand, the one Baker couldn't see, back to my tool, positioned it against her wet pussy again and slowly... deliberately this time... lowered herself slowly back onto my cock.