Put it immediately after the unbelievable claim in your edit, then follow it with Awkward Crickets before a Chipmunk Laugh breaks the tension. That order keeps the tease pointed at one person and gives the reaction time to settle before the laugh.
Об этом звуке
This is a two-second spoken clip of the Slovak slang phrase 'Nech ti nejebe bráško', delivered in a casual, brotherly tone to a mate who is talking nonsense. It feels playful and mock-exasperated, like a quick verbal nudge rather than a real scolding. The short, punchy delivery makes it land as a light-hearted rebuke for over-the-top claims and wild ideas.