gruntfart 

the sound ones anus makes whilst taking a intense bowel movement

that would be telling....(gruntfart)

gruntfart by commander muffmuncher March 28, 2014

grunthard 

(noun) feces; poop; crap; shit

"My grunthard was so big it clogged up three toilets!

grunthard by allison7777 June 14, 2010

gruntfuttock

Gruntfuttock, Oxford University Slang, especially among the:

"Oxford University Society of Change Ringers"

1. A word of dissatisfaction used in polite company;

2. A measure of late/early striking when ringing.

origin: a character "J Peasemold Gruntfuttock" appearing in a British humour show "Round the Horne" with:

THE GRUNTFUTTOCK SAGA
Broadcast: 9th April 1967

which included:

Gruntfuttock of Arabia Captured by the Turks
Gruntfuttock 'tis of Thee

"Barney, half a gruntfuttock closer";

"Stop gruntfuttocking around".

gruntfuttock by Bob "A" September 6, 2005

grantfact 

A made-up fact that the user is attempting to pass off as an actual fact in order to win an argument or sound smart.

Alex- "I was arguing with a buddy yesterday and he said that crab was originally spelled with a K"
JP - "Sounds like a grantfact to me"

grantfact by Vedders November 14, 2017

grandfarthers cock 

oops.. looks like you forgot the l in clock, have fun being scarred for the rest of your life

OH SHIT I LOOKED UP grandfarthers cock ;(

grandfarthers cock by fatfucc February 19, 2020

gruntfuttock

A word used in competition on a message board. Ambiguous.

Can be an insult, a noun, a verb...

the B is a gruntfuttock

gruntfuttock by red rose November 10, 2004

gruntfuttock

A corruption of "grandfather", meaning a bumbling, interfering, or irritating senior citizen/old man

Don't listen to that old gruntfuttock--he's harmless and has lost all his friends

gruntfuttock by Brian Adger August 28, 2021