out of one's gourd

absurd asinine bonkers cracked crackers daffy demented deranged dopey flaky foolish fried giddy half-baked idiotic in the ozone inane insane lunatic mad mental nuts nutty off the wall ridiculous screwy silly simple touched unbalanced unhinged unsound wacky whacko witless

brainy bright intelligent smart understanding

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 tree psycho psychopathic unbalanced unglued unsound whacko

OK balanced calm sane

rational reasonable sensible