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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Driving while possessing or doing something that the police COULD arrest you for. This does not necessarily mean running drugs or getting caught though.
My niggas was all riding dirty wit their tec-9s, but only half of them got busted by the po po.
by agentsteve August 14, 2007
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To partake in the act of smuggling or trafficking narcotics
we wre riding dirty tryin to make some cash real quick

"they see me rolling, they hating, patroling and tryint to catch me ridin' dirty" in Ridin' by Chamillionaire
by sec_8 April 26, 2006
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Operating one's luxury SUV or high-end sedan without utilizing factory-provided seatbelts.
"I had just ironed my shirt, so I made sure that I was riding dirty on my way to picking up some organic papayas from Whole Foods."
by UrbanDC February 1, 2008
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When you take a huge dump, and either run out of toilet paper or otherwise neglect to wipe your anus as sung about by the rapper "Chamillionaire" in his song "Ridin' Dirty."
Karl Blessing can frequently be observed riding dirty, as is evident by the fact that he smells like shit.
by seymour buttz April 19, 2006
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To snowboard or ski without a pass or on someone else's seasons pass.
Yo, Ian got busted trying to use Nicole's seasons ski pass last weekend. LOL, he was riding dirty as a girly man.
by Obutter April 3, 2012
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* Refers to a game played between friends where points are earned for succefully having sexual intercourse with extremely obese women without being caught by one's friends. If a participant is caught during this horrific act points are taken away and added to the finders point total. These women only qualify if their obesity is comperable to the fat women featured in Spencer's gag cards.

* The Chamillionaire song "Ridin'" was created to commemorate a specific instance where the artist won this game by sexually pleasuring a morbidly rotund transvestite. This event led to additional (bonus) points for Chamillionare which gave him a solid lead and eventuallty a win in a game between him and his friends.

My friends caught me riding dirty. Now I need too sleep with six fat bitches in order to win.
by John Ben August 24, 2006
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