Description by couchtuner for The Simpsons Season 5 Episode 12 : After Bart sneaks away from a field trip to the box factory, he finds himself working as Krusty’s assistant. Krusty lets Bart act out a scene on one of his gags, but Bart messes up the line and says, “I didn’t do it.” The phrase is an instant success and leads Bart to his fifteen minutes of fame.
Watch It Here : The Simpsons Season 5 Episode 12 Bart Gets Famous