Fausto Silva presented the Sunday variety show Domingão do Faustão on Brazilian television from 1989 to 2021, and Ô loco, meu became one of his most repeated catchphrases. He used it for impressive performances, surprises and moments that left him amazed on stage. Clips of the line later spread through Brazilian meme pages, reaction videos and messaging groups, where the short exclamation became a standalone joke. It remains popular because generations watched the show live, so the phrase instantly signals exaggerated amazement without needing any explanation or context to understand it today online.