Jokes on you. Reality and fakeness are contextually dependent on the universe of discourse the conversation is embedded in. I should have instead stated that "John Wick is fake" with the UD being the actual world, and not, say, in the fictional world of John Wick, but that is a problem with language and everyday discourse. It isn't another dimension that people refer to when consuming media, but rather the people in the audience creates temporary narrative constructs for which to 'house' a suspension of disbelief and engage their imaginations.