Top Definition
The seemingly never ending flow of hot, runny,painful excrement that lays waste to the porcelain of your toilet, much like Mt. Vesuvius laid waste to the unsuspecting city of Pompeii. This phenomenon is usually brought on by the ingestion of ethnic food.
Oh man! That Thai food we ate gave me some awful Mt. Vesuvi-Ass.
by TreeMI January 21, 2009

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