need one's head examined

Facetiously suggesting that a person has mental issues and should see a doctor.

need one's head examined (third-person singular simple present needs one's head examined, present participle needing one's head examined, simple past and past participle needed one's head examined)

1. (slang) Indicating that a person is very foolish, or making a stupid decision.

   You paid how much for that piece of junk? You need your head examined!

• need one's bumps feeling

• need one's eyes checked