The exact origin of this 'un poil plus bas' clip is not documented, which is common for short user-uploaded voice lines on soundboards. The phrase itself is everyday French for making a small downward adjustment, the kind of thing heard on sets, during fittings, or while hanging something on a wall. Online it circulates as a reaction-style voice snippet, valued because the meaning stays clear even for non-French speakers through tone and context. Its continued use comes from that versatility as a dry, precise punchline for visual gags.