Mr Rude is one of the later Mr Men characters, created for the long-running British children's franchise about small, personality-driven figures with names that describe how they behave. True to that idea, he is famously impolite, so a moment where he promises music and instead produces a fart fits his character perfectly. Short clips like this have circulated on meme soundboards and in edited videos because the joke needs no context: a grand claim followed by a rude noise is instantly understood, which is why it keeps appearing in reaction edits and prank compilations.