Top Definition
The inevitable urge to crap after drinking a cup of coffee, produced by the physiological effects of caffeine on the bowels. Usualy this urge comes on fast and strong, like an unstoppable rebel force.
Jake: "Why were you late to class this morning?"

Ben: "The caffeine tsunami hit on the drive to school. It was all I could do make it to the can."
by wayne ker November 18, 2012
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