1 definition by meatyhandboy
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
OR
senor badass is a grundle brush for not being creative
by meatyhandboy October 10, 2006