Alternative form of I know you are but what am I

(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.

An arrogant expression of one's importance.

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

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.

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

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

Expertise leads to career promotion.

A sarcastic response to when someone is told something obvious