CROW BEFORE ONE IS OUT OF THE WOODS

{v. phr.} To be glad or brag before you are safe from danger or trouble. - Usually used in negative sentences, often as a proverb, "Don't crow before you are out of the woods." * /John thought his team would win because the game was almost over, but he didn't want to crow before they were out of the woods./ Often used in a short form, "out of the woods". * /Mary nearly died during the operation, and she is not out of the woods yet./