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.
1604
1
Paint a bar of soap completely with clear nail polish so it won't suds up.
826
1
April doesn't fool Chuck Norris, Chuck Norris fools April.
928
0
Hide all of the desktop icons on someone's computer and replace the monitor's wallpaper with a screen-shot of their desktop.
994
0
Change the coffee in the office coffee maker to decaf.
