The line comes from 300, Zack Snyder's 2006 film adaptation of Frank Miller's graphic novel, where Gerard Butler plays Spartan King Leonidas. In the scene, Leonidas shouts the line before kicking a Persian messenger into a well, and the moment became one of the film's most quoted scenes. Clipped and shared online, it spread through early YouTube parodies, reaction videos and soundboards, where its theatrical delivery made it easy to reuse out of context. It remains popular because the reference is instantly recognisable even to viewers who have never seen the film.