they never get old!
or
100: One to do it and ninety-nine to say "I could've done that."
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They screw millions of bulbs every day, but when it comes to your bulbs, there's no record.
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One's a spineless, poisonous blob. The other is a form of sea life.
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Only two, but the hard part is getting them into the light bulb.
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It takes two to tangle!
or