Adultery My Mom & the exchange student

[Penetration]

　My father and I were sitting on the couch, watching Sam and my mother come in and out of the kitchen. 
　　"Hurry up and wash your hands and get ready to eat!" Mom came out of the kitchen, holding a bottle that looked like a wine bottle, but filled with a transparent yellowish liquid. 
　　Sam had taken off his apron by now and was sitting next to me. 
　　Just when Sam was sitting next to me, I realized that this guy was wearing a pair of black shorts, but he seemed not to be wearing underwear, because when he just sat down, I saw that the contents of his crotch were swung out on the legs of his shorts. Damn, I can't mistake the sticky look of the meat. 
　　As I sat down, the legs of my shorts were tucked into my thighs. Under the loose pants, I could even vaguely see a dark red glans as big as a black egg.
　　"Okay, wife, let's go, Zihan, wash your hands and eat!" Dad, who was sitting opposite Sam and me, didn't see anything strange about Sam. Dad jumped up from the sofa and walked to the kitchen like a child, but I always I felt so suffocated that I really wanted to punch Sam hard to relieve my anger. 
　　In the living room, the first dinner after returning home from the countryside was taking place. 
　　"Sam, where did you get this wine? I remember I only drank it once when I was in Kenya." Dad was full of joy, enjoying the bottle of wine that his mother had brought before. He originally heard Mom said it was a famous local wine that Sam asked someone to bring from South Africa. She said it was carefully brewed from the fruit of a baobab tree and other local ingredients. Although she wanted to try it, she thought of the disgusting things Sam had done. I didn't want to drink it. Seeing Sam's hospitable and enthusiastic look, my father asked me to have a taste out of embarrassment, so I reluctantly took a taste. 
　　Sam is certainly hateful, but after just one sip of this African wine, I felt a slight bitterness in my mouth, and then it turned out to be extremely sweet and full of mellow taste. 
　　"Ah? Dad, have you been to Africa?" Sam looked at his father in surprise. 
　　When my father mentioned this, I remembered that when I was a child, my father seemed to have been to Africa for more than half a year. I heard from my mother that he was going to do some construction work. I didn’t ask anything. I only knew that my father had been to Africa once. As for where he went, I didn’t know Know. 
　　"Yeah, haha, speaking of this, it happened when Zihan was in kindergarten." Dad smiled and looked apologetically at his mother, whose face was slightly rosy after drinking the wine Sam brought.