You phrase that like a riddle, and in a way it was.

The classic 1985 teen film is called "The Breakfast Club" because the group of mismatched teens stuck in detention together call themselves "The Breakfast Club." But those words only come at the very end, in the letter they give to the principal.

In the letter — which also serves as the film's thesis statement — they chastise him (and the principal in this film is very much a stand-in for Society with a capital "S") for reducing them to stereotypes, and then somewhat snarkily sign the letter off with, "Sincerely yours, the Breakfast Club."

They are the last words spoken in the film, and also the first reference to the film's title.

Incredibly, the title of one of the most influential teen films of all time is actually an inside-joke between the director and his old school pals.

"The Breakfast Club" is what detention was referred to at New Trier High School in Illinois, a school attended by one of director John Hughes' close friends.

Though the word "breakfast" isn't spoken until the end of the film, the action does open in the early morning, so the association is there at least.

Lunch, however, actually factors (briefly) into the plot, in a scene where we see what each of the five group members has brought for lunch. It's mostly an extended visual gag (particularly the sheer amount of food Emilio Estevez's character brought), but it also serves to further define the characters a little, mostly by leaning into the stereotypes.

In fact, the film's original title referred to that meal instead. In an interview with the Huffington Post, costume designer Marilyn Vance said the film's working title was "The Lunch Bunch."

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