What is Grundleberries?
1.
The little clumps of shit that gather in the hair by your asshole when you dont wipe it properly
You should check for grundleberries every now and then
See
2.
When sand, gum or dingleberries are stuck in the hair between your testicles and anus.
She said my grundleberries taste good.
See
3.
the things hanging between a guys legs, aka testicles
Folgie passed out when he got a kick to the grundleberries