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a sarcastic exhalation through the teeth, immediately followed by an abbreviation of the word "yeah". Sarcastic response to a question which requires a yes or no answer. Often used by teenagers, potheads, "valleys" and surfers. Another way of sarcastically saying, "Ya think?!", "hello!" or "No doubt!"
In response to a stupid question like, "Do you think it would suck if you could never have sex again?"

Answer: (with eyes rolling) "Sheeyuh!"
by shannon k June 25, 2005
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