Related:

• How many Libras -- does it take to change a light bulb?
  Er, two. Or maybe one. No - on second thoughts, make that two. Is that okay with you?...
• How many nihilists -- does it take to change a light bulb? There is nothing to change.
• How many spies -- does it take to change a light bulb?
  Why bother? (I guess the point is that spies like to do everything in the dark anyway?)...
• How many Indiana University "notes" users -- does it take to change a light bulb?
  Have you ever wondered why it's so dark in Bloomington?...
• How many gully dwarves -- does it take to change a light light bulb? You sure it's dark?
• How many screenwriters -- does it take to change a light bulb?
  "Why do we have to change it?...
• How many Libras -- does it take to change a light bulb?
  Well gee, I don't know really. I guess it depends on the bulb and where it burned out....
• How many Arians -- does it take to change a light bulb?
  None: Arians aren't afraid of the dark....
• How many astronomers -- does it take to change a light bulb?
  None, astronomers prefer the dark....