The sound is tied to a Coca Cola challenge clip from Kaisis, where the humour comes from chugging a fizzy drink and letting out the inevitable burp that follows. Challenge videos like this spread through short-form feeds because the payoff is instant, messy and easy to copy, and viewers quickly turned the loudest moments into reusable reaction sounds. It remains popular as a quick gross-out punchline, especially in drinking challenges, dare edits and funny compilations, where one unfiltered burp can carry the whole joke without any setup.