Vic Mensa got caught riding dirty. Although he thought he was clean.

The Roc Nation rapper was stopped in Beverly Hills last week for blowing a stop sign and having tinted windows. A ticket became a felony when he volunteered that he had a gun in the car.

While Mensa had a concealed carry permit for the weapon, the cops determined it was for out of state. So he was arrested for carrying a concealed weapon and spent the night in jail.

Mensa is now free on a $35,000 bond.

This isn't the first time Mensa and the cops have had a misunderstanding. Last year, he posted a video in which he says he was incorrectly detained by police for stealing from Barneys.