Vilebrequin is the French automotive YouTube duo of Sylvain Lévy and Pierre Chabrier, known for chaotic experiments, huge builds and expressive reactions filmed around cars. Their clips are frequently cut into short sounds online because single exclamations capture their humor without needing context. C'est pas vrai became one of those reusable moments, shared by French speaking fans as a quick disbelief reaction on social media and in edits. Its popularity comes from the everyday phrase itself, which anyone can apply to news, sport, gaming or everyday surprises far beyond car videos.