Artificial intelligent assistant

crack-brained

crack-brained, a.
  (ˈkrækbreɪnd)
  Formerly cracked-, crackt-brained.
  [f. prec. + -ed.]
  Having the brain cracked or crazy, crazy-pated, impaired in intellect.

1634 Canne Necess. Separ. (1849) 209 He would..have called him idle head, cracked-brained, fool. 1646 G. Daniel Poems Wks. 1878 I. 15 Crack-brain'd Menippus. 1671 Glanvill Disc. M. Stubbe 28 A crackt-brain'd Noddy. 1739 Wesley Wks. (1872) I. 212 They always took me to be a little crack-brained at Oxford. 1843 Prescott Mexico I. 214 One of those crack-brained wits,—half wit, half fool. 1862 Trench Mirac. Introd. 82 A certain crack-brained enthusiasm for..allegorical interpretation.

Oxford English Dictionary

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