The phrase comes from Brazilian football fan slang, where foi show is a common way to say a match was spectacular, and the longer line ties it directly to a World Cup game. Clips like this spread through WhatsApp groups and football pages during major tournaments, where short Portuguese reactions are reused for every big goal and upset. Its popularity comes from the universal tone of amazement, so editors keep using it for soccer highlights, gaming wins and any moment that feels like a perfect performance worth celebrating again.