Riding dirty
"Riding dirty" (or "ridin' dirty") is a phrase that refers to driving in an illegal way. Examples include driving without a valid driver's license, without mandatory registration, without the required vehicle insurance, with open containers of alcohol, or with illegal contraband such as drugs present in the vehicle. It may refer to:
 Ridin' Dirty, the 1996 album by UGK
 "Ridin'" (2006), a song by Chamillionaire featuring Krayzie Bone with a refrain of "tryin' to catch me ridin' dirty"