Grumblefuck 

noun: an expletive for a person whom reluctantly completes a task
transitive verb: an expletive verb demonstrating irritation and reluctance

Don't be such a Grumblefuck, just do it.

I'm just going to have to grumblefuck my way through this.

Grumblefuck by julzipher May 8, 2010

Grumblejack 

Any corpulant old man who grunts loudely in public showers, lockerooms and bathrooms. Although not a necesity, the grumblejack's body is usually covered in a think mat of greying hair, and on occasion a mid-sized bling blingaround the neck. Commen pastimes of the grumbljack include grunting loudely in public showers and bathrooms, and walking around naked in lockerrooms, especially in the suana when there are small boys present. The Grumblejack is known for his heavenly scent, which can often be used to lure unwary travelers into hearing range of the loud grunts and grumbles.

"Hey timmy, what's that spledid odor wafting towards use from that shower stall?" "I don't know billy, lets take our cloths off and go find out" "Grunnntt grumble grumble grunnntttt"

Grumblejack by Spenser P September 3, 2004

Grumblejack 

Any overweight man who loudly grunts while doing common tasks, such as walking or dressing oneself. Although not appealing to the eyes, the grumblejack's scent is a little slice of heaven.

Grrnt Grumble Umph Grshdh

Grumblejack by Keith G July 26, 2004

Gumblefuck

A person who's usually normal, but occasionally makes idiotic remarks.

Ted: What color is an orange?
Me: Ted, you gumblefuck, the color is the same as it's name. Just like a lemon.

Gumblefuck by Some random guy was taken February 19, 2023

rumblefuck 

syn. "to get ones dick rocked"

The Vols rumblefucked their way to a win over Vandy last Saturday.

rumblefuck by Teabagus Maximus November 21, 2009

grunglefuck 

When a gaggle of geese fuck

Look at that grunglefuck over there

grunglefuck by Grungleflump March 5, 2022

grumplefuck 

One who grumples often.

Man, that guy Dan is a grumplefuck.

grumplefuck by Auntie Pigtails July 27, 2009