Used to ask the meaning of a word (replace “…” with a word).

(idiomatic, US) As an interrogatory, indicative of a nonchalant attitude towards potential criticism, not caring about what other people think, confident and self-possessed.

(idiomatic, humorous) Used to express surprise about someone's uncharacteristic or wacky, offbeat past actions.

Alternative form of what's your job

Used to ask what the interlocutor is currently doing.

(rhetorical question, somewhat hostile) Expresses discomfort because the interlocutor is looking at something; usually, this is said when the interlocutor has been staring at the speaker.

(MLE, MTE, slang) what's up, what's happening (a greeting)

Alternative form of think of the children

(rhetorical question) What is the delay? Why are you not acting or proceeding?

Used to ask the name of a man.