The phrase comes from Brazilian Portuguese slang, where vagabunda and safada are both teasing insults used among friends rather than formal language, and the clip circulates as a short viral audio rather than as a line tied to a known film, show or song. Its popularity online rests on how recognisable the rhythm and attitude are to Portuguese-speaking audiences, even in videos with no translation. Creators reuse it as a reaction sound for gossip, pranks and playful accusations, and its short length makes it easy to share on messaging apps and short-form video platforms.