(rhetorical question, colloquial, childish) Assertion that an insult made by the party to whom the phrase is directed is actually true of that party, and not of the person using the phrase. Usually considered to be a playground taunt.

(idiomatic) To be aware of where one's interests lie in a situation.

(idiomatic, vulgar) To have an adequate level of knowledge or skill; to understand what one is doing or talking about.

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

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

To be knowledgeable about how the world works; to have common sense and judgement.

Alternative form of know someone from Adam

Alternative form of I know you are but what am I

(informal) Used as a rhetorical question to confirm agreement, knowing or understanding at the end of a statement.

A sarcastic response to when someone is told something obvious