A person who engages with sexual activity with men on a level that is neither respectable nor healthy, usually multiple men per day/night. The Cock Milker's lust for dick derives from their uncontrollable craving for semen, ravenously pleasuring cocks so they may harvest their sticky load. It's almost as if the creamy yield sustains their well being.
Person 1: "Elizabeth barricaded herself in that gloryhole! We've been trying to get her out for three hours now!"

Person 2: "Leave her be, a Cock Milker can't change her cumstreaks."
by ShitLeopard February 5, 2014
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