In The Simpsons episode "Cape Feare," an Itchy and Scratchy interlude turns deadly with a suicide joke that crossed the line.

The Simpsons episode "Burns Heir" featured a scene so controversial amongst the team that it was cut, only to be beloved years later by fans.

In the Season 4 Simpsons episode, "The Front," Bart and Lisa read a letter that is implied to have a swear word.

The Simpsons Season 37 aired a new episode that revealed a previously unseen part of the Simpson family’s history, and the animated series has finally confirmed a theory that fans have had with Bart ...