need, want, etc. your head examined

need (one's) head examined

To do, say, or believe something that seems completely crazy, delusional, or stupid. You need your head examined if you don't think giant corporations are in control of our legislators! You spent $400 on a T-shirt? You need your head examined.
See also: examine, head, need

need, want, etc. your ˈhead examined

(informal) used for saying that somebody is behaving in a crazy or stupid way: She spent $300 on a pair of shoes? She needs her head examined.
See also: examine, head