The buzzer sound has long been shorthand in game shows and quiz formats for a wrong answer, and online creators adapted the same signal for calling out lies. In short-form videos, reaction clips and prank edits, it became a quick visual-audio punchline: no caption is needed for viewers to understand that a claim has failed. Its brevity makes it easy to reuse across jokes, arguments and challenges, which is why it remains a staple reaction sound for creators who want an immediate, universally understood verdict.