1) To roll in your car with drugs, guns, or other shit you don't want the cops to find. Usually drugs.

2) To not have taken a shower in awhile or wiped one's ass properly.
1)
"They see me rollin', they hatin', patrollin'
Tryin' to catch me ridin' dirty."
(Chamillionaire - "Ridin' Dirty")

2)
Jim: "Hey, get your ass over here. There's grippa bitches. What's taking so long?"
James: "Give me 20 minutes. Gotta take a shower."
Jim: "Dude, you don't need a shower. The party's not gonna wait."
James: "No, you don't understand...it was chili con carne night and we're out of T.P. The neighbors came over to complain because they thought someone was playing the trumpet terribly while firing a machine gun."
Jim: "OOOOH yeah, good call. You really don't want to ride dirty like that."
by Nick D June 10, 2006
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To travel in a vehicle with a felonious amount of substance
Ray-Ray, he ride dirty - homey had six ounces up in the Escalade.
by Craig Pizzle June 24, 2006
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(verb)
1. to drive around without a purpose while wearing a flat brim hat
2. to be a douchebag while wearing a flat brim hat
3. to pack bombs with Lombardo while wearing a flat brim hat
4. to go to C-Block while wearing a flat brim hat
1. DUUUUUG, we ridin' dirty friday?
2. DUUUUUG, check out Riggz ridin' dirty with dem beat bids
3. DUUUUUG, Quiggins was ridin' dirty just last week when we were away
4. DUUUUUG, I just had spanish, its time to RIDE DIRTY brigga
by Lax Dragoon April 12, 2010
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1. To ride, uniquely, what some would think is "weird, or boring," but what you believe is and what is really cool.

2. TO drive without your license
i am going to ride dirty, and do my homework
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Literally means to ride with two or more passengers undrer the influence of illegal substances while driving the legal speed limit with your lights turned off after 8:00 p.m.
Jim: We ride dirty everynight broseph, it was intense to the max!
Herbert of Guatalope: Yeah, but it was better than tossing that bitches salad for 5 hours last night.
by Marinesnipa October 4, 2006
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Referenced to driving a vehicle with any form of illegality;

1. Driving with an expired, suspended, or revoked license; or driving without a valid license or license plates.

2. Driving a vehicle with expired tags or failed inspection.

3. Driving a stolen vehicle.

4. Driving with unregistered guns in the vehicle.

5. Driving while intoxicated or under the influence.

6. Driving with illegal drugs/controlled substances in a vehicle.
Jason: The cops arrested me yesterday because I was riding dirty.

Chris: Why?

Jason: Because I had a sack of weed in the car.
by krazykiki June 11, 2006
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Riding dirty means getting caught by the police with contraband, or in urban slang, gettin caught by da po po, wid some of dat dro dro.
When the sirens went off, all i could do was floor it cuz I was riding dirty like a muafuca.
by Nokari D. January 29, 2006
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