This is partly a continuation of the Blues Brothers reference (after Jake asks for the fried chickens, Elwood asks for two slices of dry toast), and at the same time a nod to the Marx Brothers. In the cabin scene from A Night at the Opera, Groucho is giving his order to the steward outside the cabin; Chico is calling out “And two hard boiled eggs!” from inside, Groucho repeats it to the steward, then Harpo honks his horn and Groucho says “Make that three hard boiled eggs.” This happens several times, with Groucho ordering a multi-course meal in between. At one point Harpo adds a second honk, in a different pitch, and Groucho adds, “And one duck egg.” At the end Harpo produces a long series of honks in assorted tones, and Groucho says to the steward, “Either it’s foggy out, or make that a dozen hard boiled eggs.”