Top Definition
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
1 more definition
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
