It was at summer camp when I was 9 or 10. Every night we’d shower 3 boys at a time in a small shower room with one shower head so we were rubbing up against each other basically the whole time. Every time we’d shower one of us would get a boner. That would always cause the other two to as well. After a couple weeks we started rubbing them together. I didn’t know what we were doing but I loved it. That was the same summer I learned to jerk off. We’d be in the showers and have a competitive “jerk off”s and whoever could cum first won.. we thought it was hilarious. After I got back from camp that year every sleepover I had I would jerk off with the other boy. I felt like Prometheus telling them all about this amazing thing I discovered at camp.