Lip piercing is the practice of piercing one's lip with a stud (barbell) or ring. This practice has some historical precedent, but is known by most as an activity of the youth.
A decorative item is worn in the piercing: commonly a single-ball barbell, captive bead ring, spike or inert plug nowadays. Traditional labrets were often clay disks. The modern labret, with a steel ball or spike visible, is a piercing which particularly suits men with round faces and/or beards.
The labret piercing is relatively straightforward: the lip is held in a clamp while the needle and jewelry are pushed through. Oral piercings heal very quickly and resist infection, but stick to sensible Listerine and/or salt mouthwashes daily. An unstretched piercing closes up very quickly - in a matter of hours - so if you have a job interview, take it with you and pop it back in afterwards.
The labret was a traditional piercing among the American North-West Coast Indians, where it was related to status:
The word is from the Latin labrum, lip. It is not French, and should be pronounced "la-bret" not "la-bray."Anthropology
When a mask was being made to represent someone of high status, naturally enough, that mask had a labret. Word Origin