An exlaimation of astonished confusion. Similar to the phrase "What the Hell" or "Holy Shit".
Little Billie: "Mom the dog got stuck in the garden hose again!"

Mom: "What the duece!"
by PhilipRyan April 13, 2006
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When an event, act, or opinion doesn't make any sense, is stupid or just plain fucked up; To be appalled by the actions or comments of someone else.
KITTY: Hey Red, guess what I'm getting my husband for our anniversary?... I'm having laser hair removal!

RED: WHAT THA DUECE!
by wudupyo11 May 14, 2009
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