Or how about this?
How many Dream Theater members does it take to change the light bulb?
One:
John Petrucci's muscles are too big. He'd crush the bulb.
Jordan Rudess' fingers won't stop moving. He can't even pick it up.
John Myung prefers total darkness.
James LaBrie is a pirate. He doesn't believe in technology.
That only leaves Mike Mangini.