psychotic lunatic mad nuts crazy maniacal maniac mental gaga paranoid crazed psycho paranoidal deranged looney whacky disturbed demented strange irrational unhinged loony whacko nutty unbalanced cuckoo wacko screwy eccentric certifiable wacky ballistic batty bonkers cracked bedlam daft unreasonable throughout the bend haywire kooky foolish odd barm