Place it right after the denial in your edit, as the reaction that exposes it, then follow it with Law and Order Dun Dun for a dramatic reveal. For a louder group-chat moment, put DJ Airhorn after the reveal instead to turn the callout into a celebration.
關於此聲音
This is a short spoken exclamation lasting just over two seconds, with one voice stressing each word of the phrase for maximum disbelief. It lands as funny, sassy and judgemental, like catching someone in the act and calling it out in front of everyone. The delivery makes a small slip feel like a full-blown scandal, turning surprise into instant drama.