This sound is best known online as a generic kids cheering reaction clip rather than as a quote tied to one famous character or scene. It spread through short-form edits, gaming montages, meme posts and simple video makers that needed a quick celebration cue. Its popularity comes from how instantly recognizable the emotion is: a burst of youthful applause that reads as victory, approval or playful hype. Creators still use it because it is short, clean and easy to drop after a punchline, reveal or successful moment.