Finge que me engana is a common Portuguese expression meaning pretend you are fooling me, and as a short audio clip it circulates mainly as a reaction sound rather than as a quotation from a known film or show. Its appeal comes from how instantly recognisable the attitude is: the speaker is not angry, just unconvinced, which makes it easy to reuse across jokes about excuses, alibis and unbelievable stories. In short-form video and meme edits, that shared understanding keeps it useful long after any single trend fades, because the situation it mocks keeps happening.