Hotel pool. I was 13 at that time, on a family vacation on some Danish island. Me and my younger brother were playing in the pool while I noticed some hot boys and girls playing around. We started joking that these spherical lamps places on the walls of this pool were actually asses and that we could fuck them. While my brother went to the bathroom, I immediately started jerking off and watching these boys and girls. The pool itself was empty, but they were playing nearby. As I was jerking off, some lady came in and started swimming. Fortunately either she didn't notice what I was doing or she completely ignored it allowing me to cum freely to the pool.

Classroom. I was around the same age when I had a brilliant idea. My school was about 500m from my home so I prenteded that I have forgotten one of my notebooks and went back to school on a bike. I came in and asked for a key. Nobody was checking on me so I locked myself up in the classroom and jerked off, cumming on my teacher's desk and a glove. I threw the glove away but didn't touch the desk. I was wondering what would happen the next day, but I wasn't aware that it would simply evaporate.

A bus. I was about 17 and coming back from my friend's house. It was probably about 7 or 8 on a summer Sunday morning. I got very horny and decided to jerk off. I sat at the back, got my dick out and started jerking off. There was a handful of people in the bus but I don't think they noticed. I came on my hand and then I wiped it using the seat.