Banned because catch 22 (from a novel from 1923, I did not know that before) basically states that in order to confirm that you are crazy, you need to ask for an evaluation. Asking for an evaluation confirms that you are sane. Therefore, you can never be confirmed crazy; you are crazy, sane or confirmed sane. It's a phrase for a paradoxical situation from which there is no escape.
Double banned for long explanation.