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Fruit from ones Anal cavity.
Roger enjoyed munching casually on Kevins oderferous butt fruit.
by Anonymous July 12, 2003
'Fruit of the butt'
Synonymous with shit, turd(s), poop(s), etc. Can be singular or plural.
Singular: I'm about to drop a load of buttfruit.

Plural: Their whole back yard was loaded with piles of buttfruit.
by Big Ed Moustapha April 17, 2008