What does Alice mean when she says to the Caterpillar she cannot explain herslef because sje is not herself?

The Caterpillar demands that she explain herself and the meaning of her comment.

Explanation: The Caterpillar demands that she explain herself and the meaning of her comment. "I can't explain myself, Sir... because I'm not myself, you see," Alice responds. The Caterpillar summons Alice to tell her something important, which he precedes by cautioning her not to lose her cool.

answer; ewing's sarcoma;

answer; the candidate for vice president;