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1.
A term used to agree while still in disbelief. While you may also be agreeing, you are making it obvious that you disagree. It is also crucial that you roll your eyes while saying it. In a sense, its like saying "suuuuure".
Hey dude, I just found a 100$ bill!!!

Yah, oh-keh. *rolls eyes*
by Misha W March 28, 2010