*shrug* We don't know. We've seen it used to mean inside people who have a history relating to stories, shows, movies, things like that.

We try to respect that other people have different realities than we do. Rather like learning that there are multiple groups that don't have a background of trauma - this was not our experience, but that in no way invalidates someone else's experience. (One of us says they knew it was possible, to the rest of us this was a new thing.)