2. Man I was getting with Tiffany the other night and it was all good until she got on top and I smelled somethin evil. That bitch was ridin dirty!
(2) The act of partially soiling one's underpants and continuing to "ride dirty" as though nothing had happened.
Person 2: Ya, we're ridin' dirty.
Person 1: "I think I might be ridin' dirty."
Person 2: "Seriously"?
Person 1: "I dunno, I might be."