A person who absolutely love to lick, suck, bite, blow on, and/or lap up the stretch of skin from a man's anus to his testicles.
That chica was a grundle muncher extrodinare! She was born to be a grundle muncher cuz I know her mother didnt teach her that!!
by Jerzy Jaz November 28, 2006
one he enjoys to nibble/munch the grundle
That kid is whack! What a grundle muncher.
by Quail Man September 24, 2003