What’s the funniest prank you’ve ever pulled on someone?

Two years ago I lived on a hall with a bunch of my friends in college. The rooms were all either doubles or singles, and used key cards for access, like a hotel room. Once shut they would automatically lock, so people would use the deadbolt to prop the door open. Most of the time our doors were left deadbolted open even when we slept because we all knew and trusted each other. One of the guys there (we'll call him Alex) had no trouble pranking any of us, but absolutely lost his shit when people did stuff to him. It also didn't help that he was an easy target. Alex was very organized and HATED when anybody put something on his desk or rearranged anything in general. He was one of the people that shut his door every night.

Alex and his roommate were both on the track team and were going away for the weekend to compete in a meet. Alex generally went to bed and got up early, so he had been blowing an airhorn at people at like 5:30am before going for a run for the past couple days. Fortunately for us, one of our hallmates was fraternity brothers with the RD for the building. RDs are given swipe cards that open ANY door in case people accidently lock themselves out.

Well the RD, after being bribed with a 6-pack, swiped us in to Alex's room. We proceeded to take everything and flip it like a mirror image. Basically, Alex's stuff went to his roommate's side and vice versa. This included two desks, a couch, two lofted beds, a big bookshelf, tv, fridges, all the posters and tapestries on the wall, dressers, and a bunch of other things I am forgetting. A lot of these things needed two people to move effectively. We even plugged all the electronics back in so the room was fully functional. The only thing slightly out of place was the rug, which we duct-taped to the ceiling, and his clothes, which we had turned inside out and hung back up. Now for anyone else this would be a slight incovenience, but for Alex we knew this would be like the apocolypse.

As a final touch on the way out, we balanced a box of probably 100 empty beer cans on top of a tall chair. Thus when he opened the door again at a normal speed, the beer cans would go everywhere.

The whole hallway woke up at 3am on Sunday to the loudest scream of anger I have ever heard. Alex and his roommate had just gotten back from the track meet and he was not pleased. Everyone rushes out of bed into the hall thinking something terrible is happening but are instead met with Alex's roommate crying from laughter on the floor in the hall while Alex is throwing things out into the hall so he can rearrange them. He also didnt want to go to bed until his room was back in order but then refused to let us help him move stuff back because he didn't want anyone touching his things again.

We let Alex's roommate sleep on our couch that night. Alex was still moving his things around at 8am when we went to breakfast. There was no airhorn waking us up that week.

/r/AskReddit Thread