Katie Kaboom first appeared as a recurring segment on Animaniacs in the 1990s, built around a simple gag about teenage mood swings taken to cartoon extremes. In her sketches, everyday frustrations at home would build until she transformed and exploded, leaving her family to deal with the fallout before she returned to normal as if nothing happened. The short theme made the character instantly recognisable, and clips and audio from the segment later circulated online, where the explosion premise became shorthand for dramatic overreactions and sudden, outsized anger in memes and edits.