One night I was at my friends' house and we were watching porno on the satellite channels. This one show came on and it was all about these two friends get together to watch a porno movie and while they were watching, the one friends' sister came into the room and started watching with them. You could see she was enjoying the movie because the camera focused on her hand going into her panties. You could see her hand moving slowly at first and then it started moving faster and faster and I eventually figured out that she was getting herself off.
I was looking at my friend while this chick was doing this and I said to him that I wish his sister would walk into the room right now and do the same thing, and he agreed with me. He said he had fantasised about fucking his sister for a while. He wanted to fuck her ever since he hit puberty and noticed how big her tits were. They were probably about a size 38C and they were quite big for a 19 year old girl.
We carried on watching and we had obviously missed quite a bit because this chick's brother had started fingering her while his friend sat next to them and jerked himself off. This got me quite hard and I started imagining that it was me fingering her while she jerked me off. I totally lost track of the movie and started to masturbate with my friend sitting right next to me. He followed my idea and pulled out his dick and started wanking too. I think he was thinking of the same thing as me. Before we even realised, his sister had walked into the room and she was sitting on the couch on the other side of me watching me and my friend pulling each other's wires.
This must have got her horny and she started to finger herself through her white cotton panties. I stopped in such a rush that I caught my dick in my pants and couldn't get it out I was in so much shock. When I came to my senses, I looked at my friends sister and how wet she was getting. This got me hard again, so I took my dick out and walked over to her and asked her if she would mind if I gave her a good fuck. She of course didn't mind, after seeing how much meat I was packing. I first knelt down and licked her wet pussy all over and finished where she left off.
Then I turned her over and climbed onto her and started fucking her doggy style. She was fucken loose like change. I couldn't believe how fucking loose she was for a 19 year old. I was surprised that someone could get around like that. I didn't mind though of course. I thought my friend was in the bathroom jerking off, but I looked around and found out that he was kissing his sister. This got me really hot because I have never seen anyone engaged in incest before.