Place it as the final beat in a short exchange, after the other person has finished talking, before the next scene begins. For a longer back-and-forth, open with Bruh, then use this clip to close the argument, and save Emotional Damage for the moment the other person realises they have lost.
關於此聲音
This is a sub-second Portuguese exclamation, spoken in a clipped, emphatic voice that lands all at once and is gone before you can answer it. It feels fed up and abruptly funny, like a door slamming on a pointless argument, and it works because the dismissal is so short and absolute that there is nothing left to argue with.