When someone gives an Exposition, they'll often mention something that pertains to a certain event. Questioning the character about it would elicit this response. The line is often used an obvious Sequel Hook, leaving it the sequel (or prequel or interquel or what have you) to actually show said story. Due to The Law of Conservation of Detail, this story may later turn out to be relevant.
- Loki told a story in issues #6 and #7 of the 2015 run of The Mighty Thor, which included some tangents about the 9th century AD version of some Marvel characters (Ghost Rider, Black Panther, the Atlanteans etc.) "but those are stories for another day, perhaps".
- The Transformers: More Than Meets the Eye: It is one of Swerve's goals in life to have an excuse to say this. He finally gets a chance sitting in on a storytelling session of Rewind's, when the historian shifts the story's focus.
- In Goals & Privileges Harry asks how Sirius knows what nachos are and Remus replies "A night of frivolity in London, instigated by your father, and a story for another time."
- Amber and Emerald:
The goblin who was the teller at desk five that day would later be considered one of the most fortunate of their kind. Indeed, he came to bear the name Festergrip the Fated until the end of his days, but that's a whole different story to tell.
- In The Legend of Total Drama Island, The Storyteller uses the phrase, "but that is another story for another time" as a foreshadowing device, signaling that the details of the incident in question will be part of a later Tale. note The delays between the mention and the telling range from a few chapters to three quarters of the story arc.
- Both the Fairy Godfather and Lady Delphine have a tendency to say something to this effect at various points throughout the Contractually Obligated Chaos series. Most of these stories have yet to be told.
- Used as a Sequel Hook in the ending of Conan the Barbarian (1982), where narration by Mako tells us that in time, Conan "became a king by his own hand, and this story shall also be told." A different cut of the film uses on-screen titles, rather than narration, and ends instead with, "...but that is another story."
- Artemis Fowl: "...but that's another story" becomes something of a catchphrase for the first book's narrator. Most of these stories are eventually told as side plots in books 2 and 3.
- The Neverending Story ends many of its chapters with a reference to what happened to a side character who had been important in the chapter, but "that is another story and will be told another time." This turns out to be relevant to the plot, since the characters then have to try and resolve all of them, and every plot thread generates new ones.
- There's a variation in Edgar Pangborn's short story "Tiger Boy", after the villager Bruno meets the title character. Bruno wonders where Tiger Boy came from, why he is travelling with a tiger, and what he intends to do with his life, but doesn't ask because he is satisfied that Tiger Boy will tell him if he feels like it. This is no doubt Pangborn's way of hanging a lampshade on the questions the readers must be asking themselves. In the event the questions remain unanswered when Bruno and Tiger Boy are killed.
- In The Sword of Shannara when Allanon tells Shea the history of the races of the world. The trolls and gnomes are humans whose ancestors were mutated by radiation; dwarves are humans who hid underground, and through natural selection became accustomed to subterranean habitats. Noticing the obvious odd-one out, Shea asks about the Elves, and Allanon invokes this trope. Not only is it eventually followed up on, it can be considered a Sequel Hook, since the next book is all about the Elves and their history.
- The Ciaphas Cain series is presented as the autobiography of the eponymous officer, suitably edited by one of his long-time allies. Since he's basically laying out his life story to a recorder over many, many sessions, he naturally rambles at times and elides lots of important detail (which has to be cleaned up by the editor, of course). Occasional footnotes to the effect of "this is a fascinating story which need not detain us right now" crop up every once in a while. (Perhaps the crowning example is an entire novel which is presented as having been, in the main, an aside brought up in a completely different account in the "original text".)
- Often happens on How I Met Your Mother, usually refering to events in future episodes. Subverted in one episode when Older Ted says this of a security guard and his band, then decides that he'll probably never get to it and gives the Cliff Notes version ("They had one song, it didn't suck, end of story.")
- Due South used to use a variant a lot, with Fraser going "...But that's not important, what is important..."
- Commonly used in Good Eats by Alton Brown as a Catch Phrase is "But that's another show" when talking about foods that are tangentially related to the theme of the current one.
- Sophia, on The Golden Girls, occasionally said something like this during some of her many "Picture it" stories. Possibly the most memorable one was when she mentioned having been briefly engaged to her own brother.
- At the end of The Longest Journey, Lady Alvane, who has been acting The Narrator of the story is asked by her audience about the further events, since her story leaves the big open questions of what further happened to the heroine, April Ryan, who might have completed her quest but was left in another dimension, far away from home the end of it and what exactly happened during the War of the Balance, an event that was constantly teased throughout the story and which April's first quest was sort of a prelude to. Lady Alvane excuses herself by telling them she that she is quite tired, but she will gladly tell that story... some other day.
- Jade Harley from Homestuck has a special sort of precognitive prognostication that lets her know when and where her friends are and know what will happen to them in the future. Due to her flighty nature, she often leaks potentially paradox-causing information in casual conversation, and is quite bad at recovering from such events.
- Dungeons & Dragons module DA1, Adventures in Blackmoor. The DM Background section is written like someone telling a story. At one point it starts describing the destruction of Blackmoor, but then says "But of the sinking of that fabled land - another time! Today, we speak of other things."
- In "Homer's Barbershop Quartet" from The Simpsons, Bart and Lisa still have questions after Homer finishes his tale of a Beatles-like career.
Lisa: How come we never heard about this until today?
Bart: Yeah, and what happened to the money you made?
Lisa: Why haven't you hung up your gold records?
Bart: Since when could you write a song?
Homer: (laughs) There are perfectly good answers to those questions, but they'll have to wait for another night.
- That last question does get answered in "That '90s Show", where Homer was revealed to have been a grunge musician while Marge was in college.
- In the "Unfair Science Fair" episode of Phineas and Ferb, the boys build a portal to Mars, but we don't see them use it for the first half of the episode. After the first half's plot is resolved, Phineas mentions that he and Ferb had gone through the portal, but as Ferb said, "That's another story." The second half of the episode is entitled "Unfair Science Fair Redux (Another Story)", and focused on their trip through the portal during the events of the previous half.
- The opening episode of Season 4 of Thomas And Friends ends with Duke being (apparently) imprisoned forever in his shed, abandoned after his little railway closed. This is a story Thomas has been telling to the other engines, and there follows a cliffhanger:
Percy: That's not a happy ending!
Thomas: Ah... there will be. But that'll have to wait until next time.