Implies concern or curiosity about someone's mood or behavior.

Emotional State

Doesn't always expect a serious answer, can be rhetorical to show surprise or confusion.

Not Literal

Most appropriate in casual or informal situations, not for formal contexts.

When questioning the presence or state of an object or situation rather than a person.

Indirect way of expressing disapproval or a desire for an explanation.

Might convey confusion about something cultural or unfamiliar to the speaker.