Need (to have) your head examined British spoken language verb
Need/have/get/want is options to illustrate the same meaning. Using the phrase have/get something done to suggest someone to check their brain whether they are ok in order to exclam. Checked is sometimes used as a 'examined' alternative.
You need/have/get your head examined/checked for sure. You really said that you saw Ghost in reality.
If you tell someone they need their head examined, you think that that person is crazy because they have done, said or believed something stupid or strange.
You get your head examined! I'm not having that much money to lend you 1000$
"OMG! The earlier people believe that The Sun goes around the Earth". "If they said that nowadays, they must be supposed to need their heads examined."
"Mom, Can I have a marriage now". "Are you having your head checked?. You're just 16 years old."
To have no money
Used to describe someone who is naive, gullible, inexperienced, easily fooled, ignorant, unsophisticated, etc.
A person who is low-witted or stupid
The verb " need" must be conjugated accrording to its tense.
The phrase actually arrived from the antebellum phrenology fad when people–all kinds of people, from president James Garfield to Walt Whitman–got their heads “read.”Phrenologists could read your character, including what you are good at and what you aren't, by looking at the bumps on your head.
Phrenology offered physical “proof” of the true of yourself. That was part of its appeal in an age when everyone was driven to “know thyself.”Your whole self could be understood by the landscape of your scalp, a powerful idea with incredible potential for making the world work better.
Not everyone thought phrenology was a great idea, though. Lots of people thought it was a crazy idea, which is likely where the phrase “getting your head examined” got it’s uncomplimentary overtones.
To indulge unlikely or fantastical possibilities
He tends to cast beyond the moon, so his moniker is "dreamer".