One year I was fortunate to have a pass to the pools daily, which I used to do laps every night after study. One night while going with my friends we decided to go into the spa for a nice relax, the spa wasn't anywhere discreet but in the middle of the pool area. When I was in the spa I usually like to have my back to the jets, always feels really nice and a good way to rub out any stress on the muscles.
This particular night I decided to lean over the edge and not like I hadn't done this before but this particular time the jet hit through my shorts and made a fantastic sensation on my dick, and quite soon after I had a massive hard on. The jet was hitting in such a way it got all my nerves in a frenzy, and kept it going for half an hour. At this point there was a dozen or so people and this was getting quite exciting as the thought of doing this in front of people doubled the turn on. Unfortunately halfway through my exstacy the spa pool had to close and I had to get out which was a shame because I'm sure if I had been there for a couple more minutes I would have come.
This withdrawal of such a great time had made myself weak, hard to walk and was aroused even when I had got home, I was so tempted to rub one off when I got home but insisted I didn't, because first thing in the morning I was going to finish where I started. That morning I got up early and went into the spa pool where I went to the same jet I had gone to the night before. Took a bit of re arranging but got into the aroused state I had been in before, about half an hour of bliss a group of regular swimmer guys came in and sat almost next to me.
Unaware of what I was doing they continued to keep talking. This even doubled the arousing feeling I was having that the water pressure blasting against my penis was feeling double the pleasure. This went on for another five mins and then the feeling was getting even more intense that I started getting closer, the feeling of the guys next to me, the thought of getting caught and the water pressure got me closer and closer till I couldn't hold on any longer, one of the most powerful orgasms I have had that my back started to buckle and could help but bite into my arm to stop me from moaning. After I had finished I looked around to see if anyone had noticed but none of the guys had to my knowledge. I continued to do this a few times and is one of my favourite ways to get off solo.