2. A code word for "future alcoholic", most commonly used by adolescent teens.
3. Usually a blond female bimbo.
2. Stephanie: did you see that chick chug that beer!
Kayla: yeah! shes a Brianna alright.
3. Levi: Dood! my girlfriend is such a Brianna. All she wants is sex!
Robert: And the problem is...??
She is always protected by a Cameron, so don't fuck with her, or else a ninja will come after you with his extreme ninja skills.
Chad: "Yeah I wouldn't mind being friends with her."