The line comes from Harry Potter and the Philosopher's Stone, the first film in the series released in 2001, where Hermione Granger teaches Ron Weasley the levitation charm in Professor Flitwick's Charms class. The correction, it's leviosa, not leviosA, became one of the franchise's most quoted moments and spread far beyond the film through reaction videos, edits and social media clips. It endures because the pronunciation joke works even without context, giving creators a quick shorthand for magic, pedantry and a gentle put-down.