When in high school, I often would releave myself while riding on school buses. The first time this happened we were returning to school from an all-day field trip. I happened to be seated in the back by myself. As we came closer and closer to school, I felt a huge urge to piss, so I yelled to the teacher in charge of us: aren't we going to stop for a bathroom break? I recall him saying there was no need because we'd soon be back at school in no time. Right after that, I remember someone shouting at me, "Why don't you just go in your pants!" And with that everyone laughed. And then someone else shouted, "It smells like he already has!" And then everyone laughed again only harder. Rather than be embarrassed by these remarks, it really got me turned-on. And so, just before we reached the school, I decided-since they weren't going to stop--I really would relieve myself right there on the fucking bus. I guess I had to go more than I realized because my pants were quite soaked afterwards. Instead of being embarrassed, this really got me turned on and so once back at school, I headed straight for the school's john. I didn't even bother covering myself because I didn't give a fuck who saw me or not. Once in the john I had a very memorable jack-off session. Of course, jacking-off in the school's john was something I did all the time anyway, but this time was particularly memorable!