Place it at the very end of a reaction edit, after the clip you are judging has finished. Lead in with a WhatsApp message sound to set up an incoming take, then let this clip close the sequence, followed by a laugh track if you use one.
關於此聲音
This is a two-second spoken clip of the German phrase der Richter, delivered as a single short voice line with no music or effects behind it. It gives a stern, mock-serious feeling, like a verdict being announced for comic effect, which makes the brief call land as an instant judgement on whatever came just before it.