The line comes from Harry Potter and the Philosopher's Stone, released in 2001, when Hermione teaches Ron the Levitation Charm, Wingardium Leviosa, in Professor Flitwick's Charms class. The exchange became one of the film's most quoted classroom moments because it establishes Hermione as the knowledgeable student while Ron learns through trial and error. Online, fans turned the pronunciation correction into a reaction sound for pedantry, spelling debates and everyday mispronunciations, keeping it in circulation long after the film's release.