Page yourself over the intercom.
Don't disguise your voice.
Find out where your boss shops and buy
exactly the same outfits. Wear them one day
after you boss does. This is especially
effective if your boss is of
a different gender than you.
Send e-mail to the rest of the company
telling them exactly what you're doing.
For example: "If anyone needs me,
I'll be in the bathroom."
While sitting at your desk,
soak your fingers in Palmolive
liquid. Call everyone Marge.
Hang mosquito netting around your cubicle.
When you emerge to get coffee or a
printout or whatever,
slap yourself randomly the whole way.
Put your trash can on your desk. Label it "IN."