The clip comes from Brazilian television footage of a reporter caught off guard during a live report, and it has circulated online as a short reaction sound rather than as a named viral segment. Portuguese-speaking creators adopted 'nossa' as a Portuguese 'oh my god' for moments of disbelief, and the one-second length made it easy to reuse across short videos, streams and meme edits. Its appeal is its authenticity: unlike an acted scream, it sounds like a real person genuinely startled, so it still works for pranks, fails and surprise reveals years after the broadcast moment passed into meme use.