One who lacks all sense of reality, usually used to refer to my ex-wife! Crazy Insane
My ex-wife anit just crazy, she is a complete frickin Wack-a-Doodle!!
Professor or other who is completely out of touch with their students, employees etc.
She wants us to do what? She is completely "wack-a-doodle".
someone would isn't mentally ill but you would think that they were. They do weird things, that normal people wouldn't do.
Kelly is a wack-a-doodle, she does some really weird things.