Top Definition
The SOB who comes in while your working/sleeping/eating to make you want to crap yourself. It is possible to fight off diahrrea monster, but it isnt as easy to fight off as the sleep monster.
I was in the middle of a dream when the diahrrea monster snuck in and made me crap out my insides.
by Mike Castaneda October 06, 2005
5 Words related to diahrrea monster

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