I had a one night stand with a girl I met in a party and got a erection close dancing with her. She knew I had one, because she kept bumping and grinding herself on it intentionally and smiling at me. She got me so hard and horny, a wet stain began to show through my pants. It was obvious her three girlfriends sitting close by knew what she was doing. All they did was smile and look down at my bulge as she kept grinding herself on me. I was so embarrassed when she made me sit down with them on their table. Sat there completely embarrassed with my hands over my crotch covering the stain. It was then when she whispered in my ear "you want me to take care it" as she slipped her hand under mine and squeezed my dick. She knew I did without even having to tell her. I was kind of surprised when we all walked out on the parking lot and sat in car with her and her girlfriends. I never expected I was going to end up naked in her bedroom with all her girlfriends in her apartment. Found out they were college girls sharing the rent with her and about to be shared sexually. There we were both naked in her bedroom having oral sex when her girlfriends walked in. "Hope you don't mined my girlfriends watching" while she kept stroking and sucking my dick right in front of them. Naked and watching her girlfriends stripping down to nothing, I realized I was stuck in a group sex party situations. Something I had seen and herd, but never expected to experience. Got sexually worked all night, did everything in the book and sucked bone dry three times during the course of the night Couldn't believe how wild and un inhibited college girls can get. Embarrassed at first being anally fucked with a strap on, but soon sexual lust took over. It blew my mind away having four girls sexually having a party with me. Difficult to say no to a fantasy most men usually have including myself. This one turned out to be much more exciting than wanking my dick thinking about it. Sexually exhausted the next mourning but mind blowing and wouldn't have had it any other way.