Two: One to screw you out of a fee, and the other to send you to a store where they ran out of bulbs weeks ago.
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They're both plastic and little boys turn them on.
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Seven. One to change it and the other six to sing about how good the old one was.
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If one side has one, the other side has to get one. Once launched, they cannot be recalled. When they land, they screw up everything forever.
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