Top Definition
Acronym for "You don't even know."
That girl at Wal-Mart was so hot man..ydek....YDEK!
by Zach Grasham April 17, 2007
you don't even know.
Jon: Ya dude, I wanna go, but I'm having trouble with the missus.

Steve: YDEK!
by Co0k1eM0n5tr805 June 19, 2009

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