The phrase 'nani kore' is everyday Japanese for asking what something is, which is why the clip travels so well outside Japan as a reaction sound. Online, creators use it as shorthand for confusion in anime edits, gaming clips, and short meme videos, often where subtitles or context are minimal. Its meaning is clear from tone alone, even for viewers who do not speak Japanese. That universality, plus the very short runtime, has kept it circulating as a reusable punchline for strange reveals and out of place moments.