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!

Change the coffee in the office coffee maker to decaf.

A lady goes to the doctor to see about getting a facelift. "Well," says the doctor, "I can do the facelift, and then you’ll have to come back in six months for a follow-up." "Oh, no.”" the woman replies. "I want it all done in one shot. I don’t want to have to come back." The doctor thinks for a second, then offers, "There is a new procedure where we put a screw in the top of your head. Then anytime you see wrinkles appearing, you just give it a little turn, which pulls the skin up and they disappear." "That’s what I want!" exclaims the lady. "Let’s do that." Six months later the lady c ... read more

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.

A black woman was filling out forms at the welfare office. Under "Number of children," she wrote "10," and where it said "List names of children," she wrote "Leroy." When she handed in the form, the woman behind the desk pointed out: "Now here where it says "List names of children," you're supposed to write the names of each one of your children." "Dey all named Leroy," said the black woman. "That's very unusual. When you call them, how do they know which one you want?" asked the welfare worker. "Oh, den I uses the last names."