The line comes from Harry Potter and the Philosopher's Stone, released in 2001, during the first-year Charms lesson on the Levitation Charm. Hermione Granger, played by Emma Watson, corrects Ron Weasley, played by Rupert Grint, who keeps emphasizing the wrong syllable in Wingardium Leviosa. The exchange became one of the film's most quoted moments and spread widely as a reaction meme, GIF caption and TikTok audio for correcting people. Its short, scolding rhythm makes it instantly recognizable even to casual viewers of the franchise.