Top Definition
A grease cock is when you never wash your dick and balls, so that your junk builds up a heavy layer of grease. With your penis being so greasy, you won't need to worry about using lube, or having a girls vagina dry up on you because your dong is always slick.
My boyfriend goes full on grease cock! We never have to use lube during anal!
by Yojefro May 02, 2012
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