Idioms and Phrases with what do you know
what do you know
What a surprise, as in What do you know, our suitcases are the first off the plane. [Early 1900s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.