Uepa is one of the signature catchphrases of Carlos Roberto Massa, better known as Ratinho, host of Programa do Ratinho on Brazilian television since the late 1990s. His loud, populist style and repeated shouts became instantly recognisable across Brazil. Short clips of his voice circulated for years in edits, WhatsApp audios and meme soundboards, where the longer version is favoured because the extended yell gives editors more time to build a chaotic payoff. It remains popular in Brazilian internet humour for reactions that need exaggerated surprise.