The act of having sex after a man has already ejaculated (especially inside of a condom) and him therefore possibly having viable sperm already on his penis.
Dude; I only had one rubber but she was good to go again, so I wuz riding dirty the second time yo-
by rickkym January 19, 2009
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When you in a car and you just banging out whatever makes you that dough(money)
I can't be stopped today im just riding dirty getting the deal done son...
by RichieRooRoo January 14, 2011
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V.
Galavanting about the beautiful countryside while having feces residing in one's own undergarments.
Eg1:
"what did i tell you about riding dirty in this household young man, I taught you better than that."
Eg2:

"Dude, this chick and I were totally making out, then i found out she was riding dirty. I left."
by The Ryder July 6, 2006
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Slang term regarding a semi-legitimate business of contraband. Contraband being an act that bridges the gap between economies because though you may arrest people, others will rise up and some will make up new words for the industry like "riding dirty"....which is really jsut a cheap attempt at a rapper with no talent and alot of funding to "rise" to the top, if you will.

You know Run DMC??? they were IT.....they were good...or Sir Mixalot....see, that's classic, but this bullshit...it just sounds bad. Plus i mean what the hell, if you really want to make money without working hard and get women....you get a PhD.....it's actually not too hard.....gullable women will admire you and most of the work is on your own timing......you show up at work at 2pm.....or not at all if you dont feel like it. Then when your done you will likely get promoted and work alot less then a gangster and make maybe 6X as much. And women will want to fuck you, because your a "Dr." and they think that it's the shit.

That's where it's at FOOL!
Riding dirty is for pussies....the real playa's get the "Dr." then they get the women and the moolah....sucka.
by Dr. bullshit October 9, 2006
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Not takeing a shower for 3 days, and rolling up to Taco Bell.
And if the "PO PO" is behind you waiting in the drive thru, then he's trying to catch you rideing dirty.
Taco bell employee: "Here is your ultima...*cough ...Oh god sir what is that smell?"

You: "Don't try to catch me riding dirty... Gimme my chalupa slut"

Then you ghost ride out the dirve thru..
by A-TEAM June 3, 2006
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Continuing one's activities after having defecated without wiping one's anus. In other terms, not wiping yo' ass after shitting
Gangsta: Yo, man, he was riding dirty all night last night.
Homedawg: Yeah, man. That must explain why he smell like crap.
by Ward8 June 5, 2006
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