simple past tense and past participle of what-if

An exclamation of surprise.

(transitive, idiomatic) To scold; to punish, especially verbally.

(idiomatic) An informal greeting. / (idiomatic) Expression of concern, asking for an explanation

A request, usually rhetorical, to know what, in a series of negative events, is the next negative event occurring.

(idiomatic, rhetorical question) Why are you complaining? What are you complaining about?

How. (used in rhetorical questions to criticize something as completely inconsistent with reality and/or logic).

An informal greeting.

(idiomatic) used to add emphasis to "what" when beginning question.

(idiomatic, rhetorical question) Used to express surprise at an unlikely outcome.