The quote comes from Thanos in Marvel's Avengers: Endgame, released in 2019. In the film, he says it during the climactic confrontation tied to the Infinity Gauntlet. Online, the line spread through reaction edits, villain compilations and crossover memes because it is short, instantly recognizable and easy to pair with moments that feel unstoppable or doomed. It remains popular when creators want a dramatic Marvel reference without needing a long clip or much setup.