Everyone behaves differently at concerts. Some people like to stand. Some people like to sit. A lot of people like to throw up. And some people, like a fan at Katy Perry's Rock In Rio set in Brazil over the weekend, like to get up close and personal.
During Perry's performance, she made the unwise (in hindsight) decision to bring a fan "thought to be called Rayane" (So mysterious!) on stage with her. Then shit gets crazy: "Rayane" seemed to be on something, got wild, and then planted a kiss on Perry's neck before topping the whole awkward sundae off with a selfie before fleeing the stage.
YOLO, we guess.