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A mad run and/or sprint to the bathroom before your bladder explodes.
Julia made a bladderdash after she drank a whole two liter bottle of soda.
by shade June 19, 2006
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The quick sprint or 'dash' to the toilet due to the combination of excessive drinking and poor planning
As I rested on the bar, sipping my schooner, listening to his story about the time he went swimming under the flowing waterfall, I thought to myself that if I don't Bladderdash soon, I'm going to become a Bladderdash victim.
by Pearler April 11, 2011
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