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.
1039
1
Change the coffee in the office coffee maker to decaf.
1023
1
Paint a bar of soap completely with clear nail polish so it won't suds up.
498
1
Install the Blue Screen of Death screen-saver on someone's computer.
