Some dude in the 80s took a shit on a test, literally. My English teacher was a part of that class and recounted the whole thing. There was some big math test (either pre-calculus or calculus, can't remember). The teacher passed out the test and had to step out at some point for some reason. Some kid at the back of the room stood up, squatted over his desk, and shat on the test. He was expelled. Even though that was a long time ago, I'm pretty sure nothing has even come close to it at my school since then