deranged hysterical mad maniacal manic psychotic unhinged bananas bemused crackbrained daft delirious distracted distraught flipped out foolish frenzied fruity idiotic in the ozone lunatic maniac non compos mentis nutty as a fruitcake out of one's gourd out of one's tree psycho psychopathic schitzy schizoid unbalanced unglued unsound whacko