Put a "Please Use Other Door" sign on the entrance to your office building if it only has one entrance.

 1136

1  

Install the Blue Screen of Death screen-saver on someone's computer.

 618

3  

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

 533

1  

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.

 577

0  

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

 620

0