The phrase is associated with Brazilian senator Roberto Requião, who became known in Brazil for blunt, memorable statements during his long political career. Eu mato a cobra e mostro o pau spread beyond politics as a shareable audio clip and meme, especially in Brazilian social media and messaging groups, where its rhyming, confrontational rhythm made it easy to repeat. It remains popular because it compresses a whole attitude into a few seconds: confidence, defiance and a promise to back up words with proof, which fits debates, jokes and reaction videos alike.