The exact original recording behind this clip is not widely documented, so it circulates mainly as a short French reaction sound on meme and soundboard platforms. Its appeal is the phrase itself: c'est pas vrai is a common everyday French way of saying that's not true, and the long ohhhh turns a simple denial into a theatrical moment of disbelief. French-speaking creators use it to punctuate unbelievable stories, fake news screenshots and exaggerated claims, and because the meaning is clear from tone alone, it also travels in multilingual edits where viewers recognise the scepticism even without speaking French.