Raul Gil is a long-established Brazilian television presenter whose expressive on-air reactions have made him a familiar figure in Brazilian popular culture. Short clips of his delivery circulate online as reaction sounds, especially in Portuguese-language meme and short-form video communities, where a single vocal interjection can carry a joke without explanation. The Xiii sound fits that pattern: it is short, instantly expressive and easy to drop into edits, which helps explain why creators keep returning to it for surprise, embarrassment and playful suspense rather than for any longer speech.