Change the coffee in the office coffee maker to decaf.

Write a message on an upside-down paper cup that alludes to something horrible being trapped under it. Leave it on a coworker's desk or in a conference room.

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!

George had responded to a call from his attorney, insisting that they meet at once. He arrived at his lawyer's firm, and was ushered into his office. "Do you want the bad news first or the terrible news?" the lawyer asked. "Well, if those are my choices, I guess I'll take the bad news first." "Your wife found a picture worth a half-million dollars." "That's the bad news?" George was stunned? "If you call that bad, I can't wait to hear the terrible news." "The terrible news is that it's of you and your secretary."

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