look up any word, like swoll:
 
1.
baby powder, gold bond, or anything us guys spray on our nuts to keep them from sticking to our legs.
i was at golds gym and i saw a huge dusty pile of grundle dust!!!!
by chadwick March 17, 2005
 
2.
when some guy takes baby powder, gold bond, jock itch, etc. and squirts it on his balls or grundle
i was at the gym the other day and i saw a guy sprayin himself with grundle dust.
i later went back into the locker room and found a pile of it where he once stood!
by big c March 24, 2005
 
3.
the dried sweat and dead skin from the taint.
That chick is such a skank her entire diet is grundle dust and jizz.
by King of the Diner Whores August 15, 2007