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When a couple is engaged in intercourse, then one of the two proceeds to excrete fecal matter onto the others face, and then shaves his(or her) pubic, taint and ass hairs on top of the crap, as to imitate Matt Damon's beard. (distant relative of the abe lincoln)
Oh my Gosh hun, that dirty damon was so thorough that if I saw you on the street with all that crap and pubes on your face, I would have asked you for your autograph!
by zztop118 June 10, 2009
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After anal you make a sandwich and realize you have no peanut butter so you scrape her shit off your cock and make that bread moist.
My sandwich was dry until I dirty Damon'd my chick in the kitchen
by Dirty Damon September 24, 2019
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