The phrase is everyday Brazilian Portuguese for liar, you are deceiving us, often expanded online as ta enganando a rapaziada, meaning the speaker is fooling the whole group. Its original recording and speaker are not widely credited, so the clip circulates mainly as a detached reaction sound shared between Portuguese speaking communities. Short voice memes like this spread because the emotion is clear from tone alone. It remains popular for edits, group chats and live streams where a quick accusation is funnier than a written reply or a longer explanation from anyone watching.
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A short Brazilian Portuguese voice clip shouting mentiroso, ta enganando, used as a meme reaction to call out a lie, bluff or obvious scam online.
A man delivers the Portuguese accusation mentiroso, ta enganando in a loud, exasperated voice, calling someone a liar who is deceiving everyone around him. The delivery is blunt and theatrical, stretching the insult into a short burst that lands instantly even for viewers who do not speak Portuguese. There is no music or build up, just the raw shout and its comic timing. It works like a verbal red flag, turning a suspicious claim, a bad excuse or an obvious bluff into a joke and letting the audience share the disbelief without any extra explanation needed.