The clip comes from a Chris Moyles prank call recording in which John phones another taxi company while doing his best Shaggy impression, hence the part three label for this instalment in a short series of similar calls. Shaggy, the famously hungry and easily frightened friend from Scooby-Doo, is instantly recognisable from his voice alone, which is why the impression works even without any visuals. Shared on soundboards and in short-form edits, it has survived as a compact, quotable gag for prank and reaction content.