A rhetorical question asked to show that the person asking it neither knows the answer nor would be able to know it.

Used to add annoyed emphasis to an associated statement.

Alternative form of know one's own mind

Used to show a relevant fact that is unknown to a person, or that the result or sequence of events differs greatly from what one had expected with the little knowledge he or she had about the situation beforehand.

One will demand or expect justification; used in threats.

Alternative form of know whether one is Arthur or Martha

Third-person singular simple present indicative form of know where the bodies are buried

present participle of know where the bodies are buried

(slang, informal) To exercise sound judgment in a situation that is precarious and uncertain.

present participle of know when to fold 'em