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

 726

1  

Change the coffee in the office coffee maker to decaf.

 1525

1  

April doesn't fool Chuck Norris, Chuck Norris fools April.

 902

0  

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

 886

3  

Fill someone's hair-dryer with baby powder.

 799

1