thingsteal: I had this sort of thing happen in high school. A bunch of us went to a party at night and made it wilder by skinny dipping in the host's pool. I started it all, but took my clothes off once I was in the pool.
My best friend's girlfriend and her friend followed shortly thereafter, but we sort of kept our distance from one another. We were all somewhat drunk. My best friend and the other girl's boyfriend were in the house getting drunk and doing coke or something. Eventually the girls got close and brushed up against me while swimming around and naturally I was at full attention.
I'm a good guy and wouldn't cheat anybody, least of all my best friend's girlfriend who was a very cool chick. My best friend is pretty big as well (8 1/2"x6", he says, but he's not as tall as me so it appears bigger in relation) so she wasn't surprised but her friend sure was intrigued.
Eventually my best friend comes out and calls me a stud for being naked in the pool with two other naked chicks and clearly being aroused but not really tempted. But the other gal's boyfriend FREAKS OUT and starts yelling at her to get out and go home. Everybody at the party just stops to watch. She leaves the pool in tears. My best friend, always a party animal, takes off his clothes and jumps in after his woman. Well, that's it for me. I got out shortly thereafter and those two are making out all nekkid in the pool. | 
