What is a silly goose?

A silly goose is an informal and humorous expression used to describe a person who has done or said something foolish or silly. It implies a playful and lighthearted tone and is often used in a friendly or affectionate manner. The term "silly goose" is commonly associated with the image of a goose, known for its graceful but sometimes clumsy movements, which can make them appear silly or comedic. It is usually used to express mild amusement or exasperation rather than serious criticism.