Place it right after a spoken setup line in a reaction edit, then follow it with the we do not care button when the mood shifts from polite agreement to outright dismissal in the same scene.
このサウンドについて
This is a very short voice clip of someone saying 'yeah, yeah' twice in quick succession, lasting just over a second. It sounds casual and a little dismissive, like agreeing just to keep a conversation moving. That flat, unbothered delivery makes it funny for awkward nods, half-hearted agreement and moments when nobody is really convinced.