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• Q: How many Carl Sagans does it take to screw in a light bulb? A: Billions and billions.
• How many Carl Sagans does it take to screw in a light bulb? Billions and billions.
• Light Bulb Jokes Q: How many Californians does it take to change a light bulb?
  A: Six. One to turn the bulb, one for support, and four to relate to the experience....
• LIGHT BULB JOKES Q: How many Californians does it take to change a light bulb?
  A: Six. One to turn the bulb, one for support, and four to relate to the experience....
• How many accountants does it take to change a light bulb?
  (Whispering voice:) "What do you WANT it to be?" How many Christian Scientists does it take to screw in a lightbulb?...