Dead from the Neck Up British informal
If you say that someone is dead from the neck up, you mean that he or she is not intelligent, dumb or foolish.
Playing with those who are dead from the neck up, he has gradually become short-sighted.
I find myself dead from the neck up to love her, even though she was indifferent to me.
I have successfully proved that I'm not dead from the neck up.
He is so dead from the neck up that he is unable to find the answer for the easiest exercise.
To have no money
Very stupid, or silly
Used to describe someone who is naive, gullible, inexperienced, easily fooled, ignorant, unsophisticated, etc.
A very offensive term used to describe an upper-class British man who is stupid or inexperienced
To say, or believe something or someone that seems completely crazy, delusional, or stupid
In 1911, this slang metaphor was first written down or stored. “Most of the inhabitants are dead from the neck up,” wrote John Dos Passos in Forty-second Parallel (1930).