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!

 1585

0  

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

 1482

1  

Change the coffee in the office coffee maker to decaf.

 1454

1  

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

 800

0  

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

 836

3