Place a pair of pants and shoes inside the only toilet stall in a rest room to make it appear someone is using it all day.
 781
1  

Fill someone's hair-dryer with baby powder.
 791
1  

Remove the shower head and place a chicken bouillon cube in it, then put the head back on.
 713
1  

Find a sleeping person, fill their hand with shaving cream and then tickle their nose.
 829
0  

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!
 1640
0