A few coworkers and me were at a conference in Las Vegas. It was me, another guy and 2 women. I decided to go down to the pool for a swim and saw the 2 women down there and they were wearing bikinis. I never saw them like that before and I became extremely aroused. I was in swimtrunks and went into the pool for a swim. When I was getting out of the pool the women were chuckling and I could see them glancing down below my waist. I was extremely aroused and thought they were chuckling because they were seeing my erection in my swimsuit. I was getting a little embarassed thinking about how much they may be seeing. When I looked down I found my swimtrunks had dropped a bit, probably due to them being soaked and the weight of the water pulling them down. Half my ass was exposed as well as the head of my cock and half my shaft which had popped out and over my waistband.

My swimtrunks were older and the elastic waistband was not as elastic as it once was.

It made for interesting conversation afterwards.