Place it at the end of a reveal, after the moment of realisation and before the reaction settles. Open with It Was At This Moment He Knew to set up the turn, let this clip deliver the agreement, then follow with Clapping to close the scene.
About this sound
This is a roughly ten-second spoken French line from Kaamelott, 'Mais tout à fait,' delivered as a firm, knowing agreement. It feels dry, amused and a little superior, like someone conceding a point while making clear they saw it coming. The line comes from the French series Kaamelott, where a simple yes becomes a small comic moment.