Insane Clown Poppy

Originally, the episode was very different. It would have begun with the Simpsons meeting a teenage girl at the book fair, who takes an interest in them and follows them home. It's revealed that she's Homer's illegitimate daughter (with an old girlfriend) and Bart, Lisa and Maggie's half-sister. The episode would have been about the ramifications of this. Producer Mike Scully thought that the episode would be too dark so he suggested that Krusty be the one with an illegitimate child.