“Bart Gets Famous” is the twelfth episode of Season 5. It originally aired on February 3, 1994. The episode was written by John Swartzwelder and directed by Susie Dietter. Conan O’Brien guest stars as himself.
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.