Place it as the punchline after the unbelievable claim, then follow it with Oh My God Wow for a second reaction before cutting to the next scene. For a longer back-and-forth, open with No No Wait Wait, let the claim land, then use this clip to close the exchange.
Over dit geluid
This is a very short spoken clip in Brazilian Portuguese, lasting just over a second, in which a voice delivers the blunt phrase 'se tá louca, porra' with sharp, incredulous emphasis. It feels shocked, teasing and a little confrontational, like a instant reaction to something absurd or unbelievable. The delivery makes the disbelief land immediately, without any buildup or explanation.