The phrase is everyday Brazilian Portuguese slang for total disbelief, roughly what is this madness, and that familiarity helped it spread as a shareable reaction audio. Short panicked shouts like this travel fast through WhatsApp groups, short video edits and soundboards because they need no setup and translate instantly to any surprising situation. Its exaggerated tone keeps it useful long after a single trend passes, letting creators borrow the energy of a live reaction without filming one themselves or explaining the joke to the audience watching.