Expressing surprise, or ironic lack of surprise, upon learning something.
1999, The New York Times Biographical Service, volume 30, page 1518:
[…] on at least a dozen occasions, the Supreme Court itself […] had spent the last three decades scrutinizing and parsing, expanding and restricting and harmonizing and distinguishing a decision that had been null and void all along. Who knew!
2023 October 3, Stuart Heritage, “Mean Girls in 23 parts: the rise of movies and shows watched on TikTok”, in The Guardian[1], →ISSN:
And over the course of a couple of days, albeit in a disjointed and non-linear manner, I had basically watched all of What Women Want. It’s a good film! Sarah Paulson is in it! Who knew?
