Place it right after the impossible claim in your edit, then follow it with a Vine Boom for impact and a SpongeBob Fail when the claim falls apart. Keep it as the reaction beat, not the opener, so the setup earns the payoff.
このサウンドについて
This is a short Polish voice clip, lasting about 2.8 seconds, in which a speaker blurts out 'co kurwa niemozliwe' in a burst of disbelief. The delivery is raw and exasperated, turning an impossible claim into an instant punchline. It feels funny, blunt and oddly relatable, especially when plain disbelief says more than a long argument.