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The exact opposite of a taxi driver's tan. Its when one person mooches enough rides from people that their right arm, left in the UK, actually starts tanning because of the increased exposure to sun when the passenger's arm is outside of the window.
Hey man can I get a ride?

Screw off, you fat lazy leech!

Shit, he must have seen my mooch tan...
by McRunsfast October 01, 2008
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