i didnt see it but in 9th grade in a public speaking class, everyone had to bring in tapes so the teacher could tape the students speaches, then evaluate them later. and right after one kids speech ended, it cut straight to a video of him jacking off. i guess it was the second time the teacher had that happen.
and another time in 7th grade, this one kid was showing me how he cut a hole in his really big hoodie, in the front pocket thing, so he could stick his wee wee through his pants and through the hole in the pocket, reach in the pocket and jack off. and yeah he was doing it in class, he even had like a girls magazine or something with like underwear adds that he brought to class. he told me about his invention during the passing period before, so i knew the whole time exactly what he was doing, it was really wierd.