Place it right after the line that causes the mix-up, before any explanation resolves it. Start the sequence with the WhatsApp Message Sound Button to set up an incoming reply, then use this clip as the immediate collective response.
이 사운드에 대해
This is a very short clip of many voices speaking over each other at once, all sounding lost at the same time. It lasts under a second and feels chaotic and funny in a bewildered way, like a room where nobody understood the same instruction.