Tray Drop
We’ve all felt the impulse, when standing in the cafeteria next to a really obnoxious person, to just up and knock their tray right out of their hands. And while it would certainly be rude, it would also be pretty funny. But when it happens accidentally, say when someone’s turning sharp around a corner and bumps into you, laughing is totally fair game. It’s just plain funny, so long as you’re the knocker and not the knockee.