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To vomit, typically after heavy drinking. A portmanteau of the colloquial vomiting description "to yak" and the popular professional fishing tournament "Bassmaster Classic."
John: Dude, Kevin had way too much tonight...I think he's having a Yakmaster Classic in the bathroom right now.
Kevin: Just give me a couple minutes, I'll be fine! (pukes)
by The Yak Master April 23, 2012
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