There is no widely documented public origin for this clip, which appears as a user-generated recording named for Matheus rather than a line from a film, show or game. That kind of personal, unpolished audio is common on soundboards, where short, funny bodily sounds are saved, shared and reused because they are instantly understood without context. The burp format works across languages, so it travels easily in memes, prank edits and reaction videos. Its appeal is simple and durable: a loud, real burp is surprising, a little disgusting and reliably funny when timed well.