In an edit, put this clip straight after the outrageous claim, preceded by Sudden Suspense to build the pause, then follow it with Ceeday Huh for the confused second beat before you cut back to normal conversation and let the scene move on.
关于此声音
This is an eight-second voice clip of Bruno Guillon exclaiming 'vous vous foutez ma gueule!', roughly 'are you making fun of me'. The delivery feels incredulous and half-offended, like he cannot believe what he just heard, giving listeners a caught-out, you've got to be kidding feeling in one sharp French outburst.