The sound comes from a clip shared through the Manuel Sousa YouTube channel, which the original uploader presented as one of the funniest clips they had recorded. Agostinho's remark, in colloquial Portuguese, quickly became a handy shorthand among Portuguese-speaking viewers for a sudden reversal or contradictory behaviour. Shared as a short reaction sound, it travelled through Portuguese meme and soundboard communities, where its everyday wording made it easy to reuse without explanation. It remains popular because the phrase is short, instantly understood by Portuguese speakers, and fits almost any moment when someone changes their position.