From RPGNet poster Soylent comes the best description of a GM vs. clueless player interaction that I’ve ever read.
Player: I hear you’re running a superhero game. Can I play?
Me: Sure. Do you have a character concept in mind?
Player: The Invincible Hammer-Wheel!
Me: Uh… (keep in mind this was to be a “serious” supers game)
Player: He has hammers for hands and wheels for feet! Or, wheels for hands and hammers for feet. I haven’t decided.
Me: And how did he come by these “powers?”
Player: He was born that way.
Me: Must have been rough on his folks…
Player: He was raised by farm implements.
Me: …and his motivation for doing good?
Player: He lives in the woods.