Like many short reaction clips shared online, this wow sound has no single widely documented source, but its appeal is easy to understand: it packages surprise into less than two seconds. Creators reuse it because the drawn-out lead-in creates anticipation before the payoff, making it ideal for quick edits where a longer reaction would slow the joke. It fits the fast pace of meme videos and short-form content, where an instantly recognisable expression of amazement can carry a reveal on its own.