She looked at me like she wanted to say "you little pervert". But with my utter surprise she lowered her pants an raised her skirt. I could see her pu...sy, she had a some orange hair and was rose like a blossom. I started to have a violent erection. At a point she started to piss emitting a strong flow, she was looking at me and she sow my bulge in my jeans. She asked me if I liked what I was seeing. My mouth was dry like a desert stone. My erection started to hurt me so I decided to low my. He was controlling and abusive in the naughty way, so I accepted it. He didnt like me having guy friends, didnt want me going out without him, easy to piss off, like what girls warn their girlfriends about, but I was a sexually ignorant virgin in the slashie fangirl sock-in-your-mouth, crying-as-I-tie-you-down-with-more-duct-tape kind of way at the time. Because I guess I was the freak he always wanted he was now justified in not asking if I wanted to try something and just went for it. Alot of. Listening for any evidence. I stopped stroking my cock for a moment. I could hear it just faintly. The wet slurping sound of her tight slit sucking on her fingers. My cock jerked and tensed up in my hand. It was almost enough to push me right over. Precum began flowing down onto my hand in a steady stream and I subconsciously began tiny little strokes up and down, just barely massaging my frenulum with the slick liquid.Her whimpers became more urgent and faster. The image of my sister hunched. I told him it was ok and that I didn't blame him. If I were in his shoes I would have been looking too. It was then that I decided to be bold and take things a little further and see what would happen.I told him I had always wanted to see her with another man and that this was the best opportunity I had ever had. I asked if he would be interested. I think I could have knocked him over with a feather. He said "Hell yeah" and told me how hot he thought she was and admitted he was trying to get as.