The feeling of his tongue mixed with the tickle of his beard got started a throb in my soft cock. He gave me a warm smile, and smacked my ass hard."I'... gonna wash up again, wait for me in my room. We've gotta chat."I nodded and slipped out the front of the shower and dried off, not bothering to put on my cummy boxers as I went across the hall to my brother's room. I layed on the bed and just stared at the ceiling, wondering what exactly the talk would be about. Besides the obvious incest thing. “Your boy toy is here.”Normally I would have been hoping that Ashley was in the process of dressing at a point like that, but I was still too consumed by her sister’s lusciously swollen ass to think on it. It took a second, but I managed to regather my focus. Ashley was dressed but still putting on her make-up. We exchanged a few words while I set on her bed and watched her finish getting ready. She was wearing a nice sort of sweater that didn’t completely hide her chest. I loved her tits,. Luckily I’d practiced on ice lollies all my life, I just didn’t know what for. I have no idea how long it was going on for, but I was loving her minute. Eventually he pulled back, I thought I'd done something wrong. He grabbed me by my neck and pulled me up, pushed me onto the bed. I couldn't believe it, he wanted to fuck me! I was so excited I was close to cumming in my girlfriend's sister's thong. He rolled me onto my front, pulled up the skirt and across the thong. I tried to spread my legs. Now I got to admit even though Jim was thrashing away at Amy’s mouth like cheap whore it was one hell of a turn on and for another few minutes they didn’t even look or say anything to me and just pounded away without a care in the world.Then Jim pulled Amy up with the grip he had by the hair and walk right past me back onto the bed and hands Amy another condom to put on him, within half a second of being on Jim flips Amy over grabs her hips pulling them up high and squats behind sliding this.