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2.
A grading of a suntan where the rest of a mans skin is equal in color to the skin tone on his flaccid penis.

Not to be confused with George Hamilton who is a Tan cock.
I am not going to the beach this summer until I at least get Cock tan.
by 1veryangrybuddhist February 15, 2011
 
1.
Another name for an older male who is very tan during the winter months and hangs out with the college crowd in public.
Look at this cock-tan at the bar partying like it's 1999.
by Chokatay October 26, 2010