We had several classes together including biology and were lab partners so we'd gotten to know each other fairly well in the three months he'd been at...our school. Seemed like a nice guy, was nice looking, girls probably thought he was pretty cute.He and I were just finishing up a lab project and would need to get together outside of school to work up the posters and display. Hmm. Why don't I have him come over and ask Lori to help us with choosing the layout and colors and stuff. She's good at. Then three other guys then crowded her face and she begins to suck and jerk all three of their dicks. The camera guy walked over to me and told me to record everything and then he went over to my sister and violently shoved his cock into my sister’s butt. I recorded everything as he said and I actually did it seriously moving into multiple camera angles like in the porno movies. I got shots of my little sister deep throating 6 inches of dick, sucking balls dry, and at one point they stuck two. At a certain point she was just in bra and panties. And I was in vest and underwear.I asked her whether to stop or continue. She told actual game had started now. We played further and I won she removed her bra and her 34 size boobs were in front of me. I was feeling erection but I controlled. And tables turned.She won both games and I was nude and erect. I asked what next she told first finish game. And by God’s sake I won. She stood up came near me turned back. I was already erect. but she. I wanted to look at dresses which were just about 25 feet away. I figured I’d hear him and see him still when he was done talking. He loved for me to wear dresses or skirts without panties when we’d go out for dinner or to a movie. In theaters, we always sat in the back so he could finger fuck me and so I could stroke his penis. I loved sucking on his cock during movies, too. It made me giggle inside when he couldn’t concentrate on the movie and instead filled my mouth up with his sweet cum. I.