Place it as the final beat of a fail sequence, right after a punch sound when the character goes down, then follow it with a SpongeBob Fail sting to underline the embarrassment.
關於此聲音
This is a short, heavy thud lasting under two seconds, the sound of a body hitting the floor hard in a single blunt impact. It feels sudden and final, turning a stumble into a clear defeat that is easy to laugh at because the fall looks complete. Listeners instantly read it as a knockout, faint or failed attempt, which makes it useful for a sharp comic beat.