The Baby Kazuya clip circulates as a short meme sound rather than as a clearly documented line from a film, show or game, and its exact original upload is not established from the details available here. That ambiguity has not stopped it spreading through short-form edits, reaction videos and gaming clips, where the name alone is enough to signal the joke. Creators reuse it because it is instantly recognizable, easy to place, and short enough to work as a running gag. Its continued use depends less on a single source than on how the contrast makes a moment feel funnier.