There is little public information identifying who Sondre is or where this short clip was first posted, so it is best understood as a small user-shared prank sound rather than a line from a known film or show. Its existing label is simply bang, which matches its use as a sudden impact for a reveal. Because it is only a few seconds long, it travels easily in short edits, reaction clips and group chats, where a quick, recognisable punchline matters more than a detailed backstory. That simplicity is why it keeps being reused for coming out jokes and surprise reveals.