In The Simpsons episode "Cape Feare," an Itchy and Scratchy interlude turns deadly with a suicide joke that crossed the line.
One of the very best early episodes of The Simpsons, Season Two’s “Bart the Daredevil,” featured a touching storyline in which Homer risks his own life in order to protect his son from danger, plus ...
In the Season 4 Simpsons episode, "The Front," Bart and Lisa read a letter that is implied to have a swear word.
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.