Big "NO!": Krusty when he learned the only Spuckler kids fathered by Cletus were the one who couldn't sing and the one who couldn't ad lib.
Biting-the-Hand Humor: Bart tells Dr. Swanson that he once dreamt that the Simpsons were cartoon characters, and that their success led to a "crazy propaganda network called Fox News."
Brick Joke: Bart was sent to therapy for making up a story about a child murdering chef known as "Dark Stanley". The viewers eventually learned Bart's therapist had a child who was killed by a "Dark Stanley" and is deeply troubled by it.