Deixe dessa vei is a piece of Brazilian Portuguese slang, with vei used as a casual way to address a friend, similar to dude. As a short audio clip, it circulates mainly as a reaction sound for Portuguese-speaking meme and video communities, where a brief spoken line can carry the whole joke without needing subtitles. Its appeal comes from its everyday tone: it sounds like something said between friends, not a performed catchphrase. That familiarity keeps it useful for edits that need a quick, funny dismissal in only a few seconds.