(idiomatic) A sarcastic, rhetorical response to an obvious statement.

(derogatory) Sarcastically drawing attention to somebody's appearance or behaviour.

(idiomatic, colloquial, chiefly Canada, US, Australia, New Zealand) You (plural).

(grammar) The unstated subject of a command sentence, where it is assumed the subject is the person to whom the command is directed.

Used to express complete agreement with a previous statement by the interlocutor.

Alternative spelling of you all

(colloquial) OK, okey-dokey, acknowledgment that a request has been heard and understood.

(Australian rules football) An exclamation of joy or enthusiasm, often said in response to a player taking a specky or kicking a great goal.

(US, Canada) Indignant response to a person who has behaved rudely and failed to apologise.

superlative form of good for you: most good for you