As a few of you may know, I enjoy doing this:
Once upon a time, there was a pumpkin who wanted to be a real boy! So he lied to everyone that he was, and pumpkins began to get confused with people. To end this, a fairy cursed the pumpkin's vines to grow whenever he lied. So the pumpkin lied up a storm and strangled the fairy with his overgrown vines. The end!
In short, you screw up well known stories, fables, fairytales, et cetera. Then name a well known story, fable, fairytale, etc. and the person below you would screw it up. Mine was Pinocchio. Now, go!

