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That's one for the books

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That's/There's one for the books.

  (British, American & Australian informal) also That's/There's a turn-up for the books. (British & Australian informal)

something that you say when something strange or surprising happens My sister stayed in on a Saturday night! There's one for the books. That's a turn-up for the books - a Frenchman who loves English food.

See cook the books, hit the books

See also: book, one