Cách sử dụng
The word 'duff' is an informal slang term. It has a few different meanings depending on the context. One meaning is to describe something as bad or of poor quality. For example, "That movie was duff, I wasted my time watching it." Another meaning is to refer to someone's backside or buttocks. For example, "He fell down and landed right on his duff."It's important to note that this word is considered informal and slang, and may not be appropriate in certain contexts or situations. It's best to use it sparingly and only with people or in situations where it's appropriate.