Chut is slang for the slang word "choad", in which a man's penis is wider than it is long. It is always used in a
derogatory form and often used to sum up a guy simply by how he looks and not
actually after inspecting his penis. It is often used as a root word for undignified
nicknames (e.g. "Chutty McChutterson", "Prince Chuttingham", etc.)