Paint a bar of soap completely with clear nail polish so it won't suds up.

 740

1  

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

 787

0  

Take a squirt gun into the rest room stall next to someone and shoot little drops over the wall every couple of seconds while pretending to pee.

 745

0  

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

 875

0  

Find a sleeping person, fill their hand with shaving cream and then tickle their nose.

 782

0