None. There never was any light bulb.
Notes: Probably the only really good light bulb joke of 1984.
or
The lettuce came in ahead, the egg got beat and the faucet is still running.
or
ICE ICE Baby......
or
Shamboo!
Frankenstein: Witch can you make me a lemonade?
Witch: Poof you are a lemonade!
or
Just one, but he/she will spend hours checking for technical problems.
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Because it goes good with chips.
or