Why did the light bulb fall out of the tree?

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• Why did the light bulb fall out of the tree?
  Cos it was autumn. (eh...
• Why did the light bulb fall out of the tree? Cos it was doing an impersonation of the sun,
  setting...
• Not the brightest bulb on the
  Christmas tree...
• Q: Why did the first koala fall out of the tree? A:
  It was dead! Q: Why did the second koala fall out...
• A few too many lights out in his
  Christmas tree...
• How many Blue Peter presenters -- does it take to change a light bulb?
  Two. One to change it, and one to turn the old one...
• Christmas tree packet: n. A packet with every single option set for whatever protocol is in use.
  See {kamikaze packet}, {Chernobyl packet}. (The...
• No, light the OTHER end of the
  stage tree...
• How many Zen masters -- does it take to screw in a light bulb?
  A tree in a golden forest...