“Bart After Dark” – Season 8, Episode 5

Y’know that gif where Grandpa Simpson walks into the room, sees Bart, and then walks back out in one smooth move? That’s from this episode. And it’s just one of the many great jokes tucked neatly inside this classic that sees Bart working part-time at a secret brothel as Homer tries (and fails) to take care of him while Marge and Lisa are off cleaning rocks after a nasty oil spill. But hey, you just want to hear the big song from the ending, so here you go