Grundlefur 

The Grundle, also known as the Gooch, is the small section of skin located between your anus, and your scrotum. Grundlefur is the patch of hair that usually manifests itself in this region. Often times the Grundlefur is shaven.

"Bro, did you shave your grundlefur today?"

"yeah bro, like 15 minutes ago."

Grundlefur by Grundulfur July 27, 2009

grundlebuss 

someone who has sex with a twinkie, and then squeezes the cream out using their legs.

I walked into my boss's office and saw him the riding the grundlebuss, upon him noticing me he squeezed his legs and deflated the twinkie in nervousness, i immediately left.

grundlebuss by chrisalyss September 6, 2009

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

grundlebug

A member of the best fucking ultimate team in the world.

The UMW Grundlebugs are gonna fuck some ppl up in 2004-05.

grundlebug by Jefrey with one F October 20, 2004

Grundlemuffin 

The placing of one's fist into one's grundle and letting it bake there for a minute, then removing it and punching another person across the face with it.

Bitch, if you don't shut your mouth, you're gonna get a big ol' grundlemuffin!

Grundlemuffin by Head Chef McC December 21, 2006

grundleflare 

When a man gets excited his grundle swells up

Damn yo I got madddd grundleflare!

grundleflare by Glynn Aka G-Unit September 8, 2004

Grundleer 

One who while performing felacio indulges in the act of licking, kissing, or sucking of the taint/gouch. One who tosses the salad of another. A complete violation of the butt or region around the anus.

The Grundleer completely violated my butt last night.

Grundleer by Gmil October 20, 2008