Place it immediately after the confusing action is shown, once viewers have seen enough to share the reaction. Lead in with No No Wait Wait to build the hesitation, then follow the question with Oh My God Wow to close the sequence, keeping this clip as the centre of it.
關於此聲音
This is a short Russian voice line, lasting about 3.8 seconds, in which a speaker demands to know what someone is doing. The delivery is blunt, incredulous and confrontational, with the emphasis falling hard on the question itself. It gives listeners an instant jolt of exasperated disbelief, the kind that suits a moment when behaviour has crossed from silly into completely inexplicable.