All Just A Lie

That'll teach you to believe anything.

When some portion of the story turns out to have never really happened. All Just A Lie, similarly to Plot Ex Machina, isn't really an UnTrash that can be played — there are other UnTrashes nested in it, such as All Just A Dream and Story. Essentially, an All Just A Lie-type UnTrash is one that effectively undoes a part of the story, let it be a bit of it or even the entire thing, by having it be revealed that the undone story parts were fiction within fiction that was being told to us. It's possible for an All Just A Lie UnTrash to be killed by another All Just A Lie UnTrash by making the first lie that much less canonical. An example of this happening would be All Just A Dream playing in what appears to be a legitimate part of the overarching story, but turns out to be All Just A Story a new or preexisting character is telling to an audience of listeners, therefore unplaying All Just A Dream although not making it as if it was never played as despite it turning out to not have truly been played in the story, it still technically was in some form, even if this character's story being told isn't part of the franchise's story.