Little is known about the original recording behind this Portuguese-titled clip, which circulates on user-generated soundboards as a short utility effect rather than a scene from a film or show. Its appeal comes from how recognisable the fingernail scrape is without any explanation, so creators reuse it as an instant cringe or discomfort signal in edits, reaction videos and meme compilations. Because it lasts under two seconds and contains no speech, it drops cleanly over almost any footage and is often looped or trimmed to match a hand movement on screen.