Would you be kind enough to tell me whether I am right with my interpretation of the expression in bold in the following sentence?
A hundred times he had heard the old man spoken of as a little off his head.
off one’s head = out of one’s mind
Thank you for your efforts.
It is sometimes used to mean drunk or stoned, along with "off one's face".
He was off his head that night, having drunk half a bottle of vodka.
He was completely off his face on cocaine.
in one's right mind= in a healthy mental state; sane and rational
The antonym of the phrase above is out of one's mind = crazy, mad
in one’s right mind = accountable; sane and sober.
If you were in your right mind, you wouldn't be saying such stupid things to our boss.
lose one's mind = out of one’s mind = go crazy, lose one's sanity, as in I thought she'd lost her mind when she said she was going ice-fishing, or That assignment is enough to make me lose my reason. The first expression dates from the late 1500s; the second employs reason in the sense of "unimpaired mental faculties," a usage dating from the late 1300s. Also see under go out of one's mind; have all one's buttons.