I saw he was tented out and wondered if I could pull this off. I explained to him as she slept that watching her have sex with another guy was a fant...sy of mine. he said wow. I said I am not sure if we can do this, but play along like you don't know. she was asleep on the middle bench and she turned her back to the front. He was stroking himself and looking at her. he said it doesn't appear as though she is wearing a bra or panties. I said you are right. he said do ya thing she would get. Both of them were surprised by seeing my dick length and their mouth was half open in surprise.I took it for granted and shove the dick into my sister’s friend’s throat. And I pulled my slutty sister by her hair and was rubbing her face on my testicles. My testicles were hanging too low that day, maybe due to the weight of my cum! My sister was doing a good job of sucking my testicles.Now it was time for some real action. More than sex, my sister loves to be treated like a slutty slave. So,. I can tell you're a great dancer." "Thank you, it just started out as a way to stay in shape, but then I got into it." "You have a knack for dancing." "Did you want to see the rest?" "Of course, maybe tomorrow?" There was a long pause. Then a video was sent. I began to play it right away. "I have some more if you're interested." "I am very interested." She sent three more videos. Two of them were with the rest of the class. Then there was one that was just her by herself. She was wearing a dark. It was spectacular to watch you walk back and forth, helping you zipper and unzipper. Your breast was held perfectly by your black bra. Your g string buried into you, barely noticeable. Your amazing walk that looks you trained years to achieve. You had on the most seductive perfume. I was so turned on, but I knew you were too agitated and consumed to even think about sex.I debated if I should take things into my own hands or grab myself a drink. I found myself rubbing my cock u*********sly.