No clear original source is documented for this clip, and it circulates mainly as a short Portuguese reaction sound rather than as a line tied to a known film, show or song. Its appeal comes from the bluntness of the phrase itself: calling someone a poser is instantly understood as a joke about pretending, copying or trying too hard. That simple, shareable accusation helps it travel in meme edits, group chats and reaction videos, where one spoken line can replace a longer explanation.