Nickname for the guy (usually, but not always, with a D name like Damon, D-licious or Derrick,) whos always tryin to mooch or hustle you (or move in your girlfriend) but is so obviously shady that no one trusts him anymore.
"Damn! Thats 'sposed to be a dime? You went and got from Dirty D again huh?
by LeGrande February 25, 2007
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The phrase used to describe a very promiscuous guy, particularly with one who tends to get with women who aren't exactly "clean". The "D" stands for "Dick", giving hint that he may, or at least believed to be, carrying a venereal/sexually transmitted disease from all his sexual interaction with various women.
Michelle: I like John and all, but he does have a reputation of being a playa

Stephanie: Yea, I heard he has a Dirty D from all those girls he'd be fuckin'.....so watch out
by Villionaire September 26, 2011
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A young man whos perverted. The biggest perv around whos name is D (Hence Dirty D)
Oi dirty D stop fuckin pervin these chicks, they dont like it!
by sanchez April 19, 2005
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A dark mystical creature from the deep dark abyss of haiti that has mountainous pimples on the forehead region, a cheetos bakery on her lips because they are mad crusty, smells like a combonation of sewege waste and the homeless, a disgrace to all haitian people, has infectious gums and scientists have tested her skin cells and they now believe she is the reason gonnreahea have started.
Jacob: If i go in the water is dirty d going to get me?
Joshua: Of course she is a mystical creature isnt she.

or..

Man i wanted some cheetos so i went to dirty d's house.
by Jacob Banks April 11, 2009
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The Palm Springs area in Southern California, i.e. the dirty "desert," which was colonized as early as the 1920s as a place for illicit trysts by gays and straights alike, and where gays of ALL ages come from all over the world to go wild like we used to in sf "back in the day" - for details...you'd have to see it for yourself.
seen on a gay sex hookup site i.e., "been away to the real world and now i'm back in the dirty d to do what i do best..."
by the naked animal May 12, 2008
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half asian, half white. The best dick around. Girls be very afraid when the dirty d comes around.
Ladies, you'll need a wheel chair once you get the dirty d.
by Derek Lee April 18, 2005
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To get revenge on a member of the opposite sex by spilling sexual fluids on their clothes and/or skin while they sleep just before sneaking out of their residence
Man, we were bangin' out and she came and then said she was going to sleep. I said, "fuck that, I'm gettin' revenge." I whipped it out and started jerkin' it and blasted my load in her hair and on her clothes and then snuck out of her house.
"No way, you gave her the dirty-D?"
"Hell yeah"
by D-rockin' January 29, 2009
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