grundle brush

a tooth brush like device used exclusively to remove crust from one's grundle and can be used as a derrogatory insult towards someone

dude! i totally switched my grundle brush for this guy's toothbrush!

OR

senor badass is a grundle brush for not being creative

by meatyhandboy October 11, 2006

grundle brush

A goatee, mustache or any facial hair.

Dude, don't trim your grundle brush 'cause you know I don't like it all prickly!

by D.S.B. November 27, 2016

grundle brush

one who enjoys licking the grundle

Andy Bond

see taint thinner

by Senor Badass March 27, 2004