The trashiest excrements of trailer park septic tanks, which, when mixed with crack-cocaine form into an American of sub-average intelligence, and are of the lowest societal and economic standing possible, ever.
by greedy grundle groper February 22, 2010
 Get the grundlemug.
Get the grundlemug. A noun used to define the sticky build up found underneath the scrotum.  Build up increases when the persons doesn't shower or has had hot sweaty day.
Person 1: Yo J-Kwon, take a wiff of this.
Person 2: Damn! What the hell is that on your fingers.
Person 1: I haven't showered in days, and that's some of my wicked bad grundle build up from my fat ball sack.
Person 2: Damn! What the hell is that on your fingers.
Person 1: I haven't showered in days, and that's some of my wicked bad grundle build up from my fat ball sack.
by Flo$$y B June 6, 2005
 Get the grundlemug.
Get the grundlemug. by katiethelady March 13, 2015
 Get the grundlemug.
Get the grundlemug. Grundles are brown cave-dwelling creatures from the My Little Pony movie. They look like monsters to most people, but, as they constantly reassure Baby Licketysplit and Spike the dragon, "Grundles good!" They are helpful, friendly creatures. Interestingly, Danny DeVito played the Grundle Leader in the movie.
by Jezani May 10, 2009
 Get the Grundlesmug.
Get the Grundlesmug. by King David October 8, 2004
 Get the grundlemug.
Get the grundlemug. by DoctorFunkenstein August 31, 2004
 Get the grundlemug.
Get the grundlemug. Underpants, Underwear, be it Boxers, Briefs, Thongs, high rise, low rise, cotton, rayon, or polyester.
Grundles is actually short for grundlemires, as panties is short for underpants.
Grundles is actually short for grundlemires, as panties is short for underpants.
If you cut somebody off in traffic and they start flipping you off or shouting obscenities, simply say "Hey, don't get your grundles in a bundle, pal."
by Sara B Ellum December 22, 2010
 Get the Grundlesmug.
Get the Grundlesmug.