When I was a young teen, I happened to be standing in a pool in front of the warm water inflow. It hit at crotch level and before long I had a good boner going. I slipped it out of my swimsuit and held my penis up to the flow. Before long, I was cumming. It was actually the first time I'd seen myself cum and it was very hot seeing it all floating in the water. I've only seen one short video of this same thing and wonder if others have had the experience or know of other videos. Maybe it's because it was such an early sexual experience that I still find it very exciting.