The line comes from Thanos, the Marvel villain voiced by Josh Brolin, in the post-credits scene of Avengers: Age of Ultron from 2015, where he retrieves the Infinity Gauntlet after his underlings fail to obtain the Infinity Stones. Fans clipped the moment because it summed up his shift from scheming in the shadows to acting directly. It later spread through Marvel edits, reaction videos and short-form clips, where it now signals a frustrated leader stepping in personally.