McFallen circulates online as a short soundboard and meme clip rather than as a clearly credited track from a film, show or game, and its exact original source is not widely documented. That ambiguity has not stopped it spreading, because the name is easy to remember, the clip is short enough to reuse, and it fits the familiar internet pattern of turning a single moment into a reusable reaction. Creators keep returning to it for fail edits and playful roasts, where a brief, recognisable drop can set up a joke without needing any backstory.