There is no widely documented original source for this short clip, and it circulates online mainly as a standalone reaction sound rather than as a famous movie or television line. Its appeal comes from its everyday wording: people recognise the feeling of being doubted and use the question to push back in edits, memes, and short-form videos. Because the line is brief, direct, and easy to drop into a confrontation or reveal, it has stayed useful for creators responding to scepticism, fake claims, and disbelief in comments.