whadayaknow 

An abbreviation of the rhetorical question: “what do you know?”; a typical Australian expression of surprise.

Hey!, "whatsoever" IS a word, whadayaknow!

whadayaknow by nymphii January 2, 2009

whadayaknow 

The shortened version of the phrase "What do you know?" and is a used as an expression of surprise

Guy 1: "Hey, The tallest man ever recorded was 8 feet 11 inches?"

guy 2: "huh well whadayaknow."

whadayaknow by nwiefi November 2, 2021