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A lightbulb tan is a tan gained from spending lots of time under a lightbulb. It usually results in people who are abnormally white. People who have lightbulb tans live in places that are in the middle of nowhere, are usually completely antisocial, and seem to never come out of their bright caves.
Rick: Hey where's Jim?

Bob: He is working on his lightbulb tan.
Rick: That antisocial New Jerseyite.
by that guy888888 December 25, 2010
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