The phrase is French for having pain down below, and the clip circulates as a short reaction sound rather than as a quote from a well-known film or show. Its humour comes from the blunt, childish wording, which French speakers recognise instantly and which other listeners can still follow from the pained delivery alone. Shared on soundboards and in short-form edits, it is mainly used as a quick joke for falls, hits and other low blows, where a single complaining voice says more than a caption could.