A perforation through the lip.
There are many different names for lip piercings, dependent upon their position. See labret, medusa, monroe, snakebite.
That girl's lip piercing is crooked. She should take it out and re-do it.
Lip piercing are byfar the sexiest percings, guys adn girls find it pleasurable during oral sex.
His lip ring was cold when he ran it over my clit
when a loose woman takes her vagina lips, and stuffs it in a guys ass.
Woman: Do you want a lip piercing?
Man: I'm not that into piercings.
Woman: Oh no silly. It's when i literally penetrate you with my vagina!
Man: Count me in!
The location of a lip piercing can symbolize many things:
Top: Usually signifies a promiscuous individual
Bottom: An outgoing individual, but still focused and personable
Left: Signifies homosexual individuals
Right: Signifies heterosexual individuals
Guy 1: "Dude, see that girl over there? She has a lip piercing. Her top lip is pierced, I'm gonna go talk to her."
Guy 2: "But its on the left side bro."
Guy 1: "Maaaaann"