Risadinha de ladrão, literally a thief's little laugh, circulates as a short Brazilian Portuguese meme sound rather than a line from a documented film, show or song, and no single creator is reliably credited for it. Its file name and the longer phrase attached to it point to the joke behind the laugh: the idea that a sly, confident chuckle is oddly charming. Shared on soundboards and in short-form edits, it survives because that meaning is instantly understood in Portuguese-speaking meme culture, even in a clip lasting under two seconds.