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When a man bangs someone from behind, without the receiver knowing he craps in his hand and uses his poop to draw pictures on the other persons back.
When I was banging Joeys butthole the other night, I used my own shit to draw a dick on his back! It felt nice to do a dirty shannon
by dogdong September 06, 2009
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2
When you go anal on your partner and wipe your penis on their mother's titties.
Guy 1: I had such great sex last night. I have this girl a Dirty Shannon.

Guy 2: Did her mom enjoy it?

Guy 1: She loved that shit.
by Narendramodi April 06, 2017
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