throw (one's) rattle out of the cot(redirected from one is throwing one's rattle out of the cot)
throw (one's) rattle out of the cot
To behave in a petulantly upset or angry manner; to act like an angry child. Primarily heard in UK. Manchester United's star striker threw his rattle out of the cot after he was ejected from the match for biting another player.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.