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After having sex with a blonde girl, putting 2 fingers in her butt, then rub it in her hair, making a part darker.
Frank "Dude, I so gave that dumb bitch a dirty morgan"
by Mr. Bojangles November 29, 2004
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2
When you have Sex in a nasty truck stop bathroom while the girl holds her hands and legs on the walls like Spiderman to avoid touching the floor and the Shit on the bottom of the walls.
"My girlfriend and I were driving home and decided to stop at a gross truck stop for a quick fuck, But there was trucker shit on the floor and walls so she had to do a Dirty Morgan so I could hit it from the back."
via giphy
by BiggestMonkaBallls April 03, 2020
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