Put this clip after the confident claim in your edit, so the denial itself becomes the punchline. Start with No No Wait Wait while the plan is explained, then let this clip answer it, and close with Oh My God Wow once the result proves the claim wrong.
Об этом звуке
This is a roughly 19-second Czech voice clip credited to tianowow as Tiano rage, built around the claim that everything is under control. The delivery is heated and exasperated, turning a calm reassurance into something that sounds anything but calm. It lands as funny and awkward, a denial that feels less convincing the harder it is insisted on.