grundle duck 

a girl that likes to lick the Gooch area on a man.

Hey you little grundle duck quit trying to eat my gooch.

grundle duck by Evan Keeney January 5, 2008

grundle duckling

When your buddy is passed out and you glue a duck bill to his GRUNDLE. When he awakes and tries to walk the duck bill will wiggle and bite the back of his sack causing him to fall to the ground and yell, SHIT!!! The grundle bites are attacking my sack!

Billie bob (bag of donuts)Yooo Johnnie, let's give Todd the GRUNDLE DUCKLING he is passed out.
Johnnnie, sweet I got a duck bill handy!
Billie Bob glueing, glueing
5 hours later...
Todd awakes and tried to walk to the bathroom and falls over in pain holding his package...
Todd.. CRAP the grunts are attacking my SACK!

grundle duckling by ass hammer December 3, 2006

Grundlebucket 

A grundlebucket is not a pleasant person, this person always manages to weasel their way into every inch of your life and transform your joy to pain. A grundlebucket should be avoided.

Mr May: Hey student 1 can I call you Grundlebucket as a nickname

Student 1: I dont know sir I'm pretty sure that's not a nice name let me search it up on the Urban Dictionary
Mr May: OH ok, oh yes go right ahead
Student 1: A grundlebucket is not a pleasant person, this..... HEY this wasn't here last week, Grundlebucket is an inside joke for our class, this guy who wrote it.. they,...they...they...must.tt.t be..iiin our..classsss!
Editor: HA

Grundlebucket by Daniel5tookenham February 24, 2022

Grundleduce 

An especially aggressive bowel movement, usually performed while performing an outdoor activity.

We were camping and I had to take a grundelduce. So I climbed up a tree, pulled down my pants, and screamed bloody murder. Grundleduce.

Grundleduce by JooManG May 28, 2018