Artificial intelligent assistant

Van John

Van John University slang.
  = vingt-un.

1853 ‘C. Bede’ Verdant Green xi, ‘Van John’ was the favourite game. 1861 Hughes Tom Brown at Oxf. iii, We were playing Van John in Blake's rooms till three last night. 1887 Darwin Life & Lett. I. 157 A little of Gibbon's History in the morning, and a good deal of Van John in the evening.

Oxford English Dictionary

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