look up any word, like dirty sanchez:
 
1.
one who munches a grundle
lock the door grundle munch
by spidey2009 September 10, 2006
 
2.
Someone who licks the grundle flap that runs from the bottom of your balls to your asshole
Dude your such a fuckin grundlemunch
by l_Doughboy_l April 10, 2006