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1.
The result of masturbating too much to the point that your dick has changed color; a tan color or darker hue; self mutilation; rubbing your genitals until they are raw;
John: Matt's dick is sooooo tan!
Chris: Well yea he jerks it six times a day!
John: We should call him Dikembe Mu-tan-dick!!
Chris: Because he has a tan dick!
by steve analton January 25, 2012