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1.
A term to describe an annoying little person when a profane term is inappropriate.
That buttmunchkin is getting on my nerves!
by Sex Fink October 09, 2009
 
2.
The strange peaople who save their poop (see poop. I wrote one for that too) and give it to people for Christmas or save it for themselves.
I got a poop from my favorite butt munchkin in the whole world.
by anonymous September 29, 2003