Adultery My Mom & the exchange student

[Penetration]

　"So that's it, I was wondering why the living room smelled of alcohol..." 
　　"By the way, Mom, I just..." I said to my mother awkwardly. I originally wanted to tell my mother that she dropped her bra and shorts at the top of the stairs and I picked them up. I went to clean the laundry room, but I couldn't say anything at once. I knew it would stop me from meddling in other people's business. 
　　"What?" Mom's beautiful eyes swayed, still looking at me with a smile. 
　　"Um...Mom, I just came back and accidentally saw..." I was too nervous to look into my mother's eyes. 
　　"What did you see?" Mom asked me. 
　　"Um...Mom, I saw your underwear and pants thrown on the stairs. I helped you take them to the laundry room." I said it out in one breath. 
　　"Ah... I think mom accidentally dropped it when she took it for washing." Mom exclaimed in a soft voice, and then slowly told me. 
　　"Well, I'm worried that you can't find me to tell you, I'm going down, mom." After knowing that the balcony was my mom, I felt a lot more at ease. As for the noises on the balcony, maybe it was my mom snapping her clothes. It was me. I was too nervous. 
　　After saying that, I looked towards the balcony. There was nothing strange. I glanced at my mother again and noticed that she was wearing a long, loose and pure white T-shirt, which is the kind of summer pajamas that girls love to wear. , the length of the dress just reached my mother’s thighs, covering her butt and part of her thighs. 
　　Fortunately, I didn't take a look. This time I seemed to see that my mother was not wearing underwear, because my mother's breasts were already very plump and round. I immediately saw the two raised red nipples on the T-shirt. 
　　I muttered my sins to myself and hurried downstairs. 
　　"Zihan, call...Sam and ask him...to go home and go to bed early." As soon as I took a few steps down, my mother said to me behind me.
　　"Well..." I responded, and went down to the corner of the stairs. When I looked up again, I happened to see my mother turning around and carrying me to close the balcony door. This time, looking up, I saw someone again. Something I shouldn't be looking at. 
　　Since my mother was standing on the second floor with her back to me, the loose T-shirt pajamas only covered part of my mother's thighs close to her buttocks, but I looked from the bottom up, and my eyes immediately saw what was going on inside the T-shirt. 
　　Mom seems... not wearing underwear? Because at that moment, my mother's snow-white buttocks were exposed to my eyes, and in the two white buttocks, I saw a piece of black. 
　　When I saw this dark area, I was startled and hurried downstairs. 
　　Mom must be wearing black panties, I think. 
　　I returned to my bedroom and sat at the desk. After calming down for a while, I took out my mobile phone and wanted to call Sam. However, I heard a "dong" sound outside the window. I stood up and slowly opened the curtains to look outside. But nothing was seen. 
　　I frowned, am I hallucinating again? This must be the case, maybe because I have been under too much pressure from studying recently. 
　　I sat down at the desk again and called Sam.