The Simpsons (1989): Season 12, Episode 3

12 - 3: Insane Clown Poppy

While Krusty is signing autographs, Bart meets a girl who turns out to be Krusty's daughter. Krusty then spends a day at the beach with her and later that night he gambles away his daughter Sophie's violin. He then recruits Homer to help him get it back from Fat Tony and the Mob. Blackboard 'I will not surprise the incontinent'.