Grundel Grinder 

one who has sex with the hair between the anus and the vagina

Man Ray, why you got to grundel grind my cousin busta?

Grundel Grinder by Anonymous April 28, 2003

Grunder Trifecta 

A Grunder Trifecta is the ultimate achievement of having the perfect combination of three bodily fluids stains in one's underwear a.k.a. Grunders at the same time. To achieve Grunder Trifecta status, one must have signficiant fecal, urine and semen stains in the underwear at any one given time (if male). If female, fecal, urine and vaginal discharge stains at any one given time.

The Grunder Trifecta stains can be created all at the same time which requires some significant skill with timing, sexual activity and dietary strategy. Most Grunder Trifectas are created over the course of several days or even weeks allowing the stains to form naturally over time which enhances their appearance and sometimes the quantity and thickness of the stains.

The Grunder Trifecta is often done as a precursor to creating a Grunder Quadfecta which adds a fourth element of smell to the underwear. The Grunder Quadfecta creates a strong allure when adding stench and aroma to the stains of a Grunder Trifecta.

While in the locker room after football practice, Roger noticed that Frank had been wearing the same Grunders for the past week. When confronted about the situation by Roger, Frank advised that he was just a shart stain away from having a perfect Grunder Trifecta and advised Roger that he was planning to go for the Grunder Quadfecta and anticipated after his date with Sonja the Village Bicycle, he expected that the aroma would permeate the locker room and all the team would embelish him with praise over his accomplishment.

Grunder Trifecta by Eaton Holgoode April 13, 2014

Grindel Swap 

The act of going behind a man (random or acquaintence) and jiggling his balls. This could be sneaky, out in the open, or an act of retaliation. No homo.

Man 1: What happened? Why do you look so surprised?
Man 2: Ho-Holy shit! Diaz just grindel swapped me!
Man 1: Oh.

Grindel Swap by TheNester January 27, 2010

grindel 

The most fearsome enemy in the entire Mario universe. Stronger than any mortal can comprehend. He is un-killable and is able to crush objects and characters with the power of 1000 suns. Don’t mess with him

Raysfire: dang dude, the grindel is easily the strongest character in the game
Chat: ALL HAIL THE GRINDEL

grindel by Spoons213 May 26, 2021

grunder 

Typically, a grunder (also known as; the georgia grunder) is performed by one female and many males. A large funnel is inserted into the anus of the female while she does a headstand, after which sweet tea is poured into the funnel. When the sweet tea is poured, and the funnel is removed...one of the males grabs the standard household plunger and places it over the anus of the female and plunges until the sweet tea is shot into the air like a fountain....after which the males participating open their mouths and try to drink from the fountain.

"Did you hear kelly is doin' a grunder tonight? Hot damn, where's my plunger!?"

grunder by Chip McTooth May 24, 2007

Grindel 

When you hate everyone but your own race. And when you blame others but your own kind for everything that goes wrong. And at the same time you are an old ugly guy from Germany.

Guy: "Damn, we have a power brakedown!"
Other Guy: "It just broke down because migrants are running the power plant fo sure!"
Guy: "Don't be such a Grindel, biatch!"

Grindel by OzilForPresident July 23, 2018