Citations:dafuq

Interjection: "(vulgar, slang) used to express astonishment, shock, incredulity, or disbelief"

 * 2012, Kyle Manning, "A Fresher Guide to Bond: From A-Z", Scope (Bond University), Issue 21, Week 1, page 7:
 * You will spend most of your degree trying to figure out just how to walk on the Thinking Steps. Is it two feet per step? Or one? One and a half? Dafuq?
 * 2013, Alexander Barnes & Christopher Preiman, The Amaranth, Xlibris (2013), ISBN 9781479783908, page 201:
 * “Hey, guys this kid isn't exactly running on all cylinders. I don't think he's . . .” He was cut short by a rifle butt to the chest, which knocked him to the ground. “Dafuq!”

Phrase: "(vulgar, slang) the fuck"

 * 2012, Connie Anne McEntee, Waking for Hours, iUniverse (2012), ISBN 9781475958843, page 193:
 * Donnie: Where dafuq r u?
 * 2012, Maika Duperval, "The Friend Zone", The Plant (Dawson College), Volume 40, Issue 21, 5 April 2012, page 17:
 * If you're lonely, do not be some stubborn brat who only needs company and will hump anything that'll walk and give you the time of day...like, dafuq do you think you are? Barney Stinson?
 * 2012, Lorenzo Niñal, "LOL but not really", Sun.Star, 24 April 2012:
 * A parent would ask, “What is actually happening to our kids right now?” And before another parent could answer, “Dafuq we know what ‘dafuq’ means,” the kids have succeeded yet again in Twitter-trending their idols with phrases like “BieberIsGod” or “MyBodyIsReadyForBieber” or something like that, confusing their parents even more.
 * 2012, Peter Clark, "RAGE against the consoles", City (Long Beach City College), Spring 2012, page 24:
 * Dafuq did i just read?
 * 2012, Michael Voloshin, "Getting Hit With OKCupid's questionarrow", The Daily Cardinal, 30 October 2012, Volume 122, Issue 42, page 2:
 * Alright OKCupid, in the first 10 questions you’ve already asked me if I’d rather be normal or weird, if I’m happy, and if religion or race matters to me. Dafuq OKCupid? I thought you were cool and the questions would be about my favorite super power (invisibility, duh), or which Teenage Mutant Ninja Turtle I most closely align with (Michelangelo).
 * 2013, "The Top 10 Characters To Watch On Game Of Thrones (Without Spoilers)", The Black Sheep (Western Michigan University), Volume 6, Issue 2, 24 January 2013 - 6 February 2013, page 4:
 * And he didn’t [spoiler] a hooker to [spoiler] another hooker with a [spoiler]. DAFUQ EVEN IS THAT?!