a bad excuse for rappers to neglect their oral health. since they do not brush their teeth, the dentist has to cap or crown the tooth with the extreme decay. another way to say a mouth full of cavities.
dentist: 'ok paul wall, you have a mouthfull of cavities. im going to have to give you a grille.'
paul wall: 'will it hurt?'
dentist: 'no, jus ask ur other friends wit grillz."