After cleaning up and dressing, we went down stairs, but before I opened the door for that last time, I felt a pang of guilt that he hadn't had the op...ortunity to butt fuck me.I turned my back to him, lifted my skirt, dropped my knickers and stuck out my arse."Go on," I said, " Give a girl a nice time before you go". A huge smile spread across his handsome face, it's wonderful that I can make people so happy with my body, it's like an addictive drug to me. He put down his toolbox and unzipped. Of course, the front of the building had large stairs leading up to the doors, and with every step, I could hear and feel the zipper inching its way up. By the time I made it to the top, the people below me had a clear view up the back of my thighs and could see the tops of my black stockings revealed.When I got into the lobby I slipped into the ladies' room to make my wardrobe adjustments. I looked over my shoulder in the mirror at the back of the dress and sure enough, the zipper was right at. Some guys will actually turn around and follow her just to get a few more peaks of her hot big-nippled tits.When we finally got home after a night of teasing fun, her pussy is always so hot and wet already, so I often tell her how I know she wants to be fucked by all of those big cocks staring at her and that she is such a hot sexy slut. After this dirty-talk became part of our routine, she started reciting it herself back to me, saying she wants to be fucked over and over by all the big cocks. It doesn't bode well to upstage your 'master'.When I got home that night, I couldn't get that guy out of my head. I beat off to visions of him taking this to the ultimate conclusion: relieving me of my maidenhead, which I half expected to have to do to join the sorority anyhow!I worked my finger so hard and so deep inside me that I actually scraped up against my weblike membrane!Easing back, I diddled myself to orgasm twice, then decided to tempt fate.I had gotten my older sister's vibrator.