The phrase comes from Miraculous: Tales of Ladybug and Cat Noir, the French animated series that premiered in 2015. Adrien Agreste is a Paris teenager who, with the help of Plagg, the kwami of destruction who lives in his ring, transforms into the superhero Cat Noir alongside Ladybug. Fans clipped his regular transformation call for soundboards, ringtones and fan edits, where the short line spread as a recognisable cue for the character. Its continued use reflects how repeatable transformation phrases from animated heroes become shorthand in online fan culture.