Place it immediately after the question in your edit, then follow it with Ceeday Huh for a double-take and No No Wait Wait when the confusion escalates, saving Oh My God Wow for the reveal that finally explains everything.
Über diesen Sound
This short clip is a voice saying 'Iono... iono' twice, stretched out in a slow, unsure drawl that lasts just under six seconds. It feels awkward and funny at the same time, like a shrug you can hear when someone has no answer and knows it. The drawn-out delivery makes the uncertainty land harder than a plain 'I don't know' would.