Place it at the end of a reaction sequence, after the moment that needs a response but gets none. Follow a Classic Error Sound Button with this clip for a failed attempt, or reverse that order when you want the confusion to come first in a chat edit.
關於此聲音
Eqweq is a six-second sound effect clip with a nonsense title and no clear spoken line attached to it in the listing. That blankness is the point for listeners, who get a brief moment of bemusement and curiosity, like a placeholder noise that invites a double take before the conversation moves on.