Is Your Name Dave?
This is one of the funniest entries on this list because the victim can’t be mad. They left a passive-aggressive note warning everybody away from their drinks. But they made a crucial error because they wrote; “Is your name Dave?” They didn’t expect another Dave to enter the workplace one day.

The other Dave gratefully took a cold beverage and wrote another note. This must have amused the original Dave because it’s such an outrageous scenario. To be fair, the thief Dave didn’t do anything wrong because he interpreted it literally. It’s hilarious and we’re glad that they took a photo to mark its place in history (via Sauce Monsters).