Adultery My Mom & the exchange student

[Penetration]

Seeing that I was the only one in the tent, I suddenly became interested. I stood up and opened the place where Sam and Mom were sleeping. There was nothing but a unique smell. Like a pervert, I faced Sam and Mom. I smelled it a few times from where my mother was sleeping. There was an indescribable smell where Sam was sleeping. When I went to where my mother was lying down, a fragrance was left on the bed.
　　As I got closer to the bed and smelled it, I saw a few drops of dry liquid dripping on the spot where my mother had just slept on her buttocks. I touched it with my hands and found a small patch of wetness there. But can't see it.
　　Could it be that my mother peed her pants in the early morning? Impossible, how could someone as big as my mother still wet her pants? Could it be Sam’s semen?
　　Thinking about it, I was startled and stared at the wet place again. I even put my nose against the wet place and smelled it a few times. There was no familiar smell of semen, but a smell that said no. The smell is neither smelly nor fragrant.
　　Strange, what is this? It must have been accidentally dropped here by mom or dad when they were drinking water. This is the only explanation.
　　However, those few drops of solidified yellow stains were definitely semen, and they were definitely Sam's semen. He must have secretly masturbated in front of his mother last night and accidentally dripped it there.
　　Thinking about it, I couldn't help but feel some indescribable disgust towards Sam. He actually masturbated to my mother. She was the mother of a friend and classmate. How could he do that.
　　"Zihan." I came out of the tent and saw Sam and his father sitting and chatting not far from the tent, but I didn't see my mother.
　　"Well, where are Dad and Mom?" I picked up the toothbrush and walked towards them.
　　"Your mother went back to take a shower and said she felt uncomfortable sleeping in the tent all night." Dad looked very happy, but I don't know if he would be happy if he knew that Sam was masturbating in front of his mother.
　　"Zihan, today is the last day of the trip. Let's have some fun. We'll go home in the evening." Sam winked at me happily, but now I'm not in the mood to talk to him. He actually bullied my mother.
　　"Yeah." I replied to him expressionlessly, and then walked towards the river. On the way, I saw Li Xiaojun and Zhang Min brushing their teeth by the river, and of course, Zhang Min's physical education teacher boyfriend.
　　"Good morning, Teacher Zhang." I came to the river.
　　"Zihan, did you have fun these two days?" Zhang Min looked at me with a smile. I have to say, Zhang Min looks so beautiful when she smiles. Her skin is white and rosy. She must have been moisturized by her boyfriend last night. .
　　"Well, I'm very happy, right, monitor." The corners of my mouth raised slightly and I looked at Li Xiaojun beside me.
　　"Keke, yes, I'm very happy." Li Xiaojun rolled his eyes at me in a funny way.
　　"Classmate, do you have a girlfriend? You should bring your girlfriend to a place like this." Zhang Min's physical education teacher boyfriend said in a rough voice and looked at me confidently. I watched him facing Zhang Min next to her. He squatted down and thrust out his bulge in his gray sweatpants. After Sam’s behavior towards my mother last night, I now also inexplicably hate this physical education teacher. He thrust out his bulge on Zhang Min’s head. Zhang Min had no reaction to her confident genitals. This was in front of two of her students.
　　"What are you talking about? You're not big or small." Zhang Min seemed to notice her boyfriend's behavior and gently pushed the male teacher.