Idiom of the day :- Cook the books

Usage, examples and definition of the Idiom :-

The books referred to here are those used to keep business accounts, and naturally they are supposed to be precise and accurate. ‘Except, of course, when someone cooks the books !’ the boss said. Cooking the books is a very serious matter because when one does that he or she makes false or inaccurate entries to make profits look better, or worse — or even to hide stolen funds !