throw something (back) in somebody's faceto be unkind to someone after they have been kind to you or helped you
[TahlilGaran] Dictionary of Contemporary English ▲
throw something in one's face v. phr. To blame a person for (something wrong); not allow someone to forget (a mistake or failure).
■ Often used with "back".
Bob came home late for dinner last week, and his mother keeps throwing it back in his face. I made a mistake in the ball game and the boys keep throwing it back in my teeth. Compare: IN ONE'S FACE.
[TahlilGaran] English Idioms Dictionary ▲