Off one’s head

What is Off one’s head?

Off one’s head definition and meaning on Dictionary terms:
Also, off one’s nut or rocker or trolley or chump. Crazy, out of one’s mind, as in You’re off your head if you think I’ll pay your debts, or I think Jerry’s gone off his nut over that car, or When she said we had to sleep in the barn we thought she was off her rocker, or The old man’s been off his trolley for at least a year. The expression using head is colloquial and dates from the mid-1800s, nut has been slang for

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