Hide an alarm clock in someone's bedroom and set it for 3:00 a.m.
 683
0  

Hide all of the desktop icons on someone's computer and replace the monitor's wallpaper with a screen-shot of their desktop.
 727
0  

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.
 1255
1  

I just recently discovered that there is a national holiday named after Atheism. April FOOLS day. Like this story in the name of Jesus.
 1740
0  

Put tape over the optical sensor of someone's mouse.
 717
1