Forumites are very clever, so I assume that many have perpetrated or seen some delightful April Fools Day pranks this year. Please feel free to recount them. I'm all ears.
A friend at work played a good one. We have a refrigerator that is reserved for soft drinks, served on the honor system. Put a quarter into the kitty and get a can of fizzy stuff.
In normal operation, this refrigerator door has a hinge on the right side and a handle on the left. My friend swapped the hinge without swapping the handle. Both the hinge and the handle were on the left side, so pulling the handle did nothing productive.
An assortment of caffeine deprived engineers thought I had done something with the fridge, so they were holllering at me all day long. The more I protested my innocence, the more guilty I looked. This joke worked on at least two levels.
By the way, is April Fools Day only an American thing, or is it more widespread?