Cách sử dụng
"And that's flat!" is an expression used to emphasize a statement or opinion. It means that the speaker is certain about their statement and there is no room for argument or discussion. For example, if someone says "I'm not going to the party tonight, and that's flat!" it means that their decision is final and no one should try to convince them otherwise. This expression is commonly used in informal settings, such as among friends or family, and is often said with a tone of finality or authority.