rules

Someone on AskReddit got a thread going about the various ways that people managed to troll their bosses without actually breaking the rules. You've got to hand it to anyone that puts in the time and effort to troll someone, and manages to pull that trolling off while still playing things by the book. 

Most of us would agree that safety rules are important to follow. But when rules are enforced not on their utility but on the satisfactions of the people getting to abuse them, that's where people get petty. For another story of pettiness, here's a coworker who complained too much about free pizza and encouraged a petty feast.