The best April fools jokes

Write a message on an upside-down paper cup that alludes to something horrible being trapped under it. Leave it on a coworker's desk or in a conference room.
Vote: has 68.45 % from 16 votes. Send joke:

More jokes about: April fools, office
Find a sleeping person, fill their hand with shaving cream and then tickle their nose.
Vote: has 68.45 % from 16 votes. Send joke:

More jokes about: April fools
Fill someone's hair-dryer with baby powder.
Vote: has 66.71 % from 15 votes. Send joke:

More jokes about: April fools
Pull on a coworker is to press ctrl+print screen on their workstation, then paste it into Paint, save the pic, and set it as the desktop background. Move all of their icons to the trash. When they get back to their desk, clicking won't accomplish anything!
Vote: has 62.61 % from 13 votes. Send joke:

More jokes about: April fools, computer, office
April doesn't fool Chuck Norris, Chuck Norris fools April.
Vote: has 56.77 % from 17 votes. Send joke:

More jokes about: April fools, Chuck Norris
I just recently discovered that there is a national holiday named after Atheism. April FOOLS day. Like this story in the name of Jesus.
Vote: has 35.28 % from 21 votes. Send joke:

More jokes about: April fools, christian