K blushed and looked down. It hit me then that kiss in the car had marked K as mine. I knew it was incest to want my older sister but what boy does no... want to fuck his older pretty sister. Older sisters are made for sex to my way of thinking. After all those years of being cock teased; my simply taking her mouth to mine had marked her and she knew it. I have read that 18% of College girls had fucked a brother and sibling incest is the most common.Later I went to Karen's room and I respectfully. "I felt my world crumble. "But like I said, DeShawn wants you to be happy, too. That's why we're here. Let's look out the window together. Look across at the football dorm."For a while we saw nothing. Amy held me close, still rubbing my crotch and licking my ear to keep me hard, as we stood in the dark. Then she said, "There!" and pointed to the open bedroom window opposite us.Through it I saw light as the bedroom door opened and a man and a woman entered. He closed the door behind them, then. Eventually nature took its course and got my stockinged leg over him, Sally stood back a little, holding the hemline of my 'Pinky' uniform high over my bared ass, as I sat on him, his huge erection nestling between my swollen pussy lips and ass cheeks, I rode him like that for a few moments, as he felt really good and in full contact with my cunt, my clitoris squashed hard against his erection, a few moves on my part and he was covered in my sexual slime, I ached though, and as much as I could. Then I said well come home with me have a good cooked dinner and spend some time with me and mine.Well they came they seemed relaxed but could not keep their eyes off my sister in law.Finally they loosened up a little and enjoyed finally some wine.Jo, went out in the kitchen and I followed her, walked up behind her lifted her skirt, found no panties and so rubbed her very wet clit as I had done many times before. i said your pussy seems to be 'american bound' and she replied she hoped so in.