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1.
When something tastes so vile, so disgusting, so repugnant, that it can be compared to what a butt might taste like.

(Of course, most people don't taste butts, so a better phrase would be "what a butt smells like." Or, perhaps, what the expulsion of methane from out of the butt smells like.)
This banana peel tastes like butt.
by KLizzle September 03, 2006

Words related to tastes like butt

disgusting flat-out nasty grody gross repugnant repulsive vile