All Just A Story

''Oh, my God! My entire adventure was all just a story being told by an old man to a bunch of children!''

At the end of the story, it turns out it was no more than, well, a story. But it's a story that's being told by someone to other people. This can only make sense if the story had a Narrator and said Narrator is the one actually telling the story, not just narrating over an otherwise regular story.

This can't happen in books since that'd be very strange how someone is reading a book to other people within a book.

Examples of when it was All Just A Story
Family Guy - E. Peterbus Unum. The episode is about when the Griffins' house becomes its own country due to a technicality that didn't count it as a part of the United States of America. At the end, it's revealed that it was actually All Just A Story told by a teacher to her class in the distant future (200 years forward) as a history lesson.