(colloquial, sometimes sarcastic) A rhetorical question used to express incredulity: who would have guessed it?; who would have thought that would happen?

Alternative form of look what the cat's dragged in

A rhetorical question used to express incredulity or surprise: who would have guessed it?; who would have thought that would happen?

Synonym of he who smelt it dealt it

(Canada, US, colloquial) Who upset you, or caused you to behave in a certain way? criticizing somebody perceived as making an unreasonable or negative remark

(idiomatic) To float an idea, (or otherwise do some action) to see what response or controversy (if any) it generates, usually as a preliminary step.

(derogatory) It is easier to get a job teaching how to do something than to get a job actually doing that thing.

The person paying for something is the one who gets to say how it should be done

Sarcastic response to somebody assuming a position of authority that they have not earned.

Sarcastic response to somebody assuming a position of authority that they have not earned.