The exact origin of this clip is not widely documented, so it circulates mainly as a standalone reaction sound shared between meme pages and short video edits. Its appeal comes from the plain, confused question, which can be pasted over almost any unexpected entrance without needing context from a film or show. As short form video kept favouring quick punchline audio, lines like this became reusable captions in sound form. It remains popular because the confusion is instantly readable, even when the group on screen has nothing to do with actual ninjas.