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the act of having to cut a crap session short - most commonly caused when other people enter a public restroom you're using or when a concurrent emergency arises while you're doing your business.
i wish kimberly would stop following me to the bathroom. i've had to crapbort my mission three times today!

as soon as the walls started shaking, i crapborted and took cover under the bathroom sink.
by jgal66 September 21, 2011
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