Top Definition
Short form for "Who would've thought?"
Kay: MJ is innocent!
Jay: Whodathunk?!
by KidProQuo November 07, 2005
5 Words related to whodathunk
A sarcastic expression that explains that everybody/somebody has already thought of that or has acquired that information already
"Lemons sting!"..."Well who'da thunk"
by forever.and.fucking.always March 17, 2015

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