It has to do with what Henry Gibson says about "spokes on a wheel-things go round and round and round." (One generation to the next to the next, ad infinitum.) Then Donnie Smith (as he's throwing up) says something about "The sins of the father are visited on the sons." (The children wallow in misery because of-as a result of-their PARENTS sins.) Then the song that everybody sings: "It's not going to stop until you wise up!"