1. The hairy sector separating your
bunghole from your dilly-dally.
2. A room in a house/apartment specifically for men to
hang out at, also referred to as a "
man cave".
After a
long, hard day of working in the yard, I love to come inside and
scratch my sweaty grundle.
Man 1: Dude we've got the Nintendo 64 all hooked up in the grundle! Come over!
Man 2: Cool,
bro! I'll bring over some PBR and an extra controller!