Avada Kedavra is the Killing Curse from the Harry Potter books and films, one of the three Unforgivable Curses and the signature spell of Lord Voldemort. The phrase is usually delivered in a sharp shout during duels, which made it easy to parody online. This stretched version exaggerates that delivery for comedy, turning a deadly spell into a meme sound for edits, gaming clips, and reaction videos. Its instant recognition among fans keeps it popular long after the films ended.