The episode parodies the 1926 film The Jazz Singer, which was a watershed film as it was the first movie to be featured with sound. In it, a rabbi's son goes against his family's attempt to make him become a rabbi, choosing instead to pursue a career as a jazz singer. This is referenced when a young Rabbi Krustofsky remarks "If this was a musician or a jazz singer I could understand, but a clown, no!"
The scenes of Krusty calling up his father then staring into space parody Robert De Niro in Raging Bull, who had an estranged father whom he would randomly call without having the confidence to speak any words, leaving the father to perplexedly say "Hello, hello?"
When Krusty pulls Mr. Teeny out of his bag he tells him to go wait in the car, but when Krusty leaves there is no car outside and in the next scene he is also walking home. (The bag has also disappeared.)
When sitting at home, after trying to call and talk to his father, Krusty is shown without makeup despite the fact that it was implied in Homer's Triple Bypass that Krusty's bypass surgery that gave him a pacemaker permanently bleached his skin white and implied in Marge vs. the Monorail that Krusty's white skin is genetic (the short scene of a woman begging Krusty to see his son).