The line comes from Star Wars: Episode III – Revenge of the Sith, released in 2005, when Mace Windu, played by Samuel L. Jackson, learns that Chancellor Palpatine is secretly a Sith Lord. The moment marks a turning point in the film, as the Jedi move against a leader they had trusted. Clipped from the scene, the reaction circulated on soundboards and in Star Wars edits, where its short, shocked delivery made it easy to reuse. It remains popular because it instantly signals a dramatic unmasking without needing any context.