Place it at the end of a setup line to close the bit, then follow it with a Bruh for a deadpan reaction or a Game Show Buzzer when the moment needs a stronger rejection, keeping the stop as the final word before the next scene begins.
關於此聲音
This is a very short clip, just over half a second long, built around the words Stop FFY delivered as a sharp, abrupt cut-off. It lands with a blunt, slightly funny finality that makes an interruption feel deliberate rather than accidental, and its brevity gives it a punchy, no-nonsense edge.