My biology teacher, whenever he sees a kid sleeping, he collects all the books he can and drops them and says "sleep when you're dead" IF he likes you. (I'm not BS'ing at this next one) this stoner in my class fell asleep, so he took his pencil, and sliced it in half with one of his swords (he has a collection... lol)
My woodshop teacher used to get some wood and slam it on your desk if you fell asleep during the safety videos, but this shit in the video is ridiculous.