Sgt. Grumbles 

A ranking officer in the Bear Military, primarily known for his role in the "Grumbles Massacre", where he allowed his unit to come under heavy attack by the rebel Lion Forces resulting in their complete slaughter. At the time, Sgt. Grumbles had found a cache of honey and had consumed it all.

"Sgt. Grumbles! Launch the counter-offensive! Sgt. Gruuuuummbles!"

Sgt. Grumbles by Johnathon Wibworth III Esq. September 24, 2005

Mumbly Grumbly 

Term used to describe someone who complains, bitches and moans all the time but does it in a low 'mumbled' voice, and in low, run-on sentences so you can't understand what they are saying.
Usually, but not always, limited to grumpy old men.

That old dude looks mad, and keeps mumbling something, but I can't understand him.
Yeah that's old man Withers...he's always all Mumbly Grumbly.

Mumbly Grumbly by phoenixxx70 May 14, 2010

Tummy Grumbles 

A word the new girl uses to describe her hunger during a presentation.

“Girl this water helps with my tummy grumbles!”

Tummy Grumbles by Pax stax cashx February 19, 2019

Dirty Grumbles 

Sucking dick from below while person on top is hovering over your chest, while shitting or rubbing shit on your nipples

I wanted a raise, so I gave the boss a proper dirty grumbles

Dirty Grumbles by Chrometitty October 27, 2021

Grumblish 

(Noun): A language developed in the early 21st century using grunts, giggles, and other wordless, tonal nuances to vaguely communicate between two humans. Most commonly used by Stoners and persons with an aggravated loss of speech.

"Hmfgrmbiliction" said that dude in the living room speaking Grumblish.

Grumblish by veator January 9, 2012

Grumblesaurus

Someone who no longer becomes happy when they drink.

Mark is a grumblesaurus, he wouldn't make a good road trip buddy

Grumblesaurus by Prink January 25, 2013

Grumbles 

noun:

1) One who prematurely denies a correct response only to come full circle and carefully explain the same answer
2) One who is easily mistakable for a person of a lesser education level
3) One who may become moist at the sound of the Orphan Whisperer's voice

Lecturer: Blah, blah, blah
(Upon entering lecture hall) Student 1: Why is the secretary standing on the stage with a microphone...
Student 2: Hah, hah, hah
Student 1: Oh my gosh, that's Grumbles?
Student 2: Hah, hah, hah

Grumbles by Jack O'Sniles September 19, 2009