who'd have thunk it

English edit

Alternative form of who would have thunk it
- 1895 September, Frances Cora Perce, “A Sonata of the Woods”, in W. S. B. Mathews, editor, Music. A Monthly Magazine Devoted to the Art, Science, Technic and Literature of Music, volume VIII, Chicago, Ill.: The Music Magazine Publishing Company […], →OCLC, pages 478–479:
  He stayed until he saw she had recovered her self possession, then he left, telegraphed to Mr. Hinsdale of Helen's safe arrival—always the same thoughtful fellow—and then went home and wrote sonnets to his lady love. "Who'd have thunk it of 'im?"
- 1906, Ralph Henry Barbour, “In the Rowing-room”, in Captain of the Crew, New York, N.Y.: D. Appleton and Company, page 147:
  "Hello, Muggs!" he cried, vainly trying to bestow a pat upon that unquiet animal. "Say, Trevor, hasn't he grown? He's twice the size he was when you got him!" / "It's a way puppies have." / "You don't say so? Who'd have thunk it! […]"