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v. The gratuitous utilization of internet instant messaging services as means for cantankerous ranting; being regardless to the affects of one's statements upon their audience. Particularly by those who are under the influence of CNS stimulants and/or of Irish decent.
"I had been mucking for hours, about nothing important, and was waiting for a fresh contact to come online, as I had already fully annoyed most of my list. Just then, while wondering to myself why no one wanted to talk to me, I remembered to take more Dexedrine, which I washed down with a Guinness."
mucking by Valdeargos March 25, 2005
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The process of cleaning buildings which damaged by prolonged floods, especially when referring to a large area being cleaned; mucking out buildings
A lot of the people we met volunteering in New Orleans had been mucking.
mucking by JW Hawkeye June 14, 2008
Putting a vacuum cleaner nozzle up one's anus and leaving on suck until it looks like you are breathing in very deeply.
Also known as a vacuum enema.
Murking may only be confirmed if there is the presence of faecal matter inside the vacuum cleaner after the attempt.
N.B. most 'murkers' have a general use vacuum cleaner and a separate vacuum cleaner specially for murking (this is done for reasons of hygiene).
Fancy coming 'round mine for a 'murk'?
You have been 'murked'!
Is the pope a 'murker'?
Nancy had a 'murking' party.
Murking by Big Boy Murker2k1 February 7, 2009
v. The gratuitous utilization of internet instant messaging services as means for cantankerous ranting. Particularly by those who are under the influence of CNS stimulants and/or of Irish decent.
"I had been mucking for hours, over nothing, and was waiting for a fresh contact to come online, as I had already over-annoyed most of the ones on my list. Just then, while wondering to myself why no one wanted to talk to me, I remembered to take some more Dexedrine, which I washed down with a Guinness."
mucking by N/A February 19, 2007
Yo, you mushin him?
mushing by Anonymous May 28, 2003

Gas Masking 

A variation of ball sacking where you spread your scrotum over your partners face and fart.
He held me down and gas masked me. It was disgusting.

I hear that guy is into gas masking, that is not cool!
Gas Masking by SilentNine May 2, 2010
When someone is doing something wrong and just failing at life.
“Hey”, “Jack is muking right now and is pissing me off.”
Muking by Larry Gato November 30, 2018