Place it at the end of a clip, right after the odd habit or confession appears, so it answers the moment directly. Open with You What for a confused reaction, then let this line close the scene as the final reply in the edit.
關於此聲音
This is a short Dutch spoken line from De Luizenmoeder, lasting just over five seconds, in which the speakers calmly say they do not find something strange. The delivery is dry, matter-of-fact and faintly amused, turning an odd confession or habit into something completely normal. It works as a gentle, deadpan shrug rather than a joke, letting the weirdness pass without fuss.