Several decades ago in high school I was in the back of the classroom where I was able to undo and unzip my pants to take out my erection with the reservoir-tip condom right there, ready to roll down to the base after pushing back my pubic & shaft hair first so it wouldn't get pulled, then go all the way with my right hand. This one day the teacher unexpectedly got up just as I was within seconds of cumming, and saw me completely filling that condom. I was afraid he was going to call or write my parents about it, but he didn't. I wasn't a good student, only cared about my horny dick, like right now.