Choose the correct meaning of the idiom 'off one's rocker' in the sentence:
Anyone who quits this job without a backup must be off their rocker.
Show answer & explanation
Correct answer: A
Explanation
The idiom "off one's rocker" is an informal way of saying that someone is crazy, insane, or acting very foolishly.
Physically tired (B) and Ready to retire (C) are not related to the concept of being "crazy."
Emotionally strong (D) is actually the opposite of being "irrational" or "unstable" in this context.