This is a different kind of prank call. When your phone rings, answer with, "Hi, this is Jeffrey, I'd like a large pizza with extra horseradish" and when they start to respond, say "Oh, sorry, you must have the wrong number, see ya." Of course, make sure the person who called you isn't someone important, like your friend or your dad's boss or someone.
An apple a day keeps the doctor away, especially if you have good aim!