(idiomatic, usually imperative) Synonym of act one's age (“to behave in a mature manner; to avoid being childish”).

Synonym of know one's ass from a hole in the ground

(US, military, slang) incorrect; false

(idiomatic) To succeed in a deception. / (idiomatic, with on) To fool, trick, or deceive.

(idiomatic) To demonstrate oneself to be capable; to provide a respectable performance or worthy competition; to stick up for oneself.

(idiomatic) To be patient; to wait.

Used other than figuratively or idiomatically: see turn, in, one's, grave. / (idiomatic) To be appalled, offended or disgusted by something, despite being deceased.

To place a thumb upon the tip of the nose, typically with the fingers spread and while simultaneously wiggling one's fingers, in a gesture of disrespect.

(idiomatic) Completely controlled by someone; at someone's command.

(slang, idiomatic) To confess, or to divulge secrets, typically speaking freely and at length after a change of motive or an incentive. / (slang, idiomatic) To vomit.