need (one's) head tested

need (one's) head tested

To do, say, or believe something that seems completely crazy, delusional, or stupid. You need your head tested if you don't think giant corporations are in control of our legislators! You spent $400 on a T-shirt? You need your head tested.
See also: head, need, test
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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