Send email to the rest of the company telling them what you're doing. For example: "If anyone needs me, I'll be in the bathroom."

Put a chair facing a printer, sit there all day and tell people you're waiting for your document.

Every time someone asks you to do something, ask them to sign a waiver.

Every time someone asks you to do something, ask them if they want fries with that.

Page yourself over the intercom. (Don't disguise your voice.)

Come to work in your pajamas.

Find out where your boss shops and buy exactly the same outfits. Always wear them one day after your boss does. (This is especially effective if your boss is a different gender than you are.)

Make up nicknames for all your coworkers and refer to them only by these names. "That's a good point, Sparky." "No I'm sorry I'm going to have to disagree with you there, Chachi."

Include a piece of your children's artwork as a cover page for all reports that you write. (If you don't have children, draw stick figures yourself.)

Schedule meetings for 4:14 pm.

Agree to organize the company Christmas party. Hold it at McDonald's Playland. Charge everyone $15 each.

Put your garbage can on your desk. Label it "IN."

Hang mistletoe over your desk.

Include a personal note on every email you send. "On a personal note, I'm feeling a bit tired and grumpy today." "On a personal note, I'm pleased to announce that I got my highest score ever on Tetris last night."

Put up mosquito netting around your cubicle.