The voice belongs to Fausto Silva, better known as Faustão, who hosted the Sunday variety show Domingão do Faustão on Rede Globo from 1989 to 2021 before a brief stint at Band. Famous for catchphrases like “ô loco, meu” and his theatrical reactions to guests, he became one of Brazil's most imitated TV personalities. Short clips of his exclamations circulate widely on WhatsApp, TikTok and meme pages, where they function as ready-made reaction audios. This particular line thrives in that ecosystem: a quick, affectionate jab of disbelief that needs no context to land.