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To blatantly and openly cheat or break with rules when unnecessary, usually due to laziness; demonstration of unwillingness or disinterest to continue in a competition by intentional self-disqualification
Come on man, don't sheave, there's only one lap to go.
by Curt R. April 09, 2008
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The unsavory act of shitting while having to throw up or heave.
Last night was painful. That burrito I ate twisted my stomach into knots and forced me to sheave all morning.
by ChardTortilla April 21, 2017
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