when you put your dick in a girls ass and hang out. Similar to soaking or floating. In the end you always have to scrub the barnacles off your cock.
Man last night i dropped the dirty anchor then proceeded to watch 6 episodes of operation repo. Man did i have to scrub the barnacles hard after that dock session.
by jokename April 22, 2009
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When a male doesn't wash his ballcack for a week or more, and slowly inserting or "anchoring" them into a female's mouth.
Guy 1: I haven't showered for weeks!
Guy 2: You better give your girl the ol' Dirty Anchor then!
by K00000000000000000000000000PEC November 20, 2010
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