April Fool's Day is always a good excuse to have a few extra laughs in the office, but if you didn't realize the date until you woke up this morning, it can feel like the joke's on you.

Luckily, a good April Fool's prank doesn't need to require a lot of planning ahead or special materials. We've scoured the web to find some hilarious (but HR-approved) pranks you can pull on your co-workers—now.


Photo of phone courtesy of Matt Reinbold.