Cách sử dụng
The expression "out of a/the hat" means to do something unexpected or to come up with an unexpected solution to a problem or situation. It comes from the image of a magician pulling a rabbit out of his hat, which is unexpected and surprising. You can use this expression to talk about someone who has come up with a great idea, solution, or answer that was unexpected or surprising. For example, you could say "She came up with that idea out of a hat." This means that the idea was unexpected and came to her suddenly.