Mumble fuck 

A person who mumbles an insult or argument under their breath to make it unintelligible by the person it is directed at.

Boss: I need this done by the end of the day!
Employee: quietly mumbles* “whatever, asshole.”
In this case the employee is being a mumble fuck for mumbling the insult or argument under their breath.

Mumble fuck by T O M E January 30, 2019

Mumble Fucker

A Mumble Fucker is a person who decides to deny themselves of the sense of hearing by wearing ear buds in an area where being able to hear will not only help others that may be trying to help you, but may help you save your own damn ass and not endanger others because you have chosen not to hear things. A really annoying Mumble Fucker wears sunglasses too in already poorly lit areas so they cant see or hear.

I saw this Mumble Fucker almost get hit by the subway train 'cause he was on the edge of the platform looking North for the South bound train and didnt hear the horn ' cause he had some tunes blasting in his ears. Then Ivsaw him blocking the escalator out of the subway tunnel and folks are trying to pass around him to walk up and he cant hear them say "excuse me" 'cause he's Mumble Fucking, tapping his foot and swaying to a beat...

Mumble Fucker by Artie Fact June 2, 2019

Mumble Fucker

Someone who criticises you for mumbling but in fact mumbles themselves

1*mumbles*"stop mumbling, it's really annoying
2"what?"
1*mumbles*"you keep mumbling all the time!"
2"mumble fucker"

Mumble Fucker by clarkyboi May 7, 2009

mumblefuck 

An unintelligible answer to a simple direct question.

My car salesman gave me a mumblefuck answer when I asked if the car was ever used as a taxi cab?

mumblefuck by BigjonnyC January 19, 2008

mumblyfuck 

Noun, term coined in 1984:

1. A person that replies to questions by mumbling.

2. A person's whose actions for a given situation are illogical or stupid to the point that one must comment about them.

Example 1:
Teacher: "So why did you think you could get away with downloading porn on the school's computers?"

Mumblyfuck: "Umm... well... *mumble*... that is... I ... *mumble*" <shakes heads>

Example 2:
Voter: "That politician just had a historical building torn down to make way for a museum to spotlight the city's history. What a mumblyfuck!"

mumblyfuck by Dr-Mobius February 7, 2010

mumblefuck 

1. Trying to talk while engaging in oral sex.

Giver: Mfff mfff, whff dff ffffk?
Reciever: Quit yo mumblefuck, bitch.

mumblefuck by Kurt Jones May 1, 2005

mumblefuck 

An extremely socially-awkward person, that rarely involves themselves in the coversation and only contributes to the conversation by randomly commenting with a semi-muffled mumble (this usually is followed by a very, very awkward silence within the whole group of people).

That kid Nile came over for the first time last night and was being a mumblefuck the whole time.

mumblefuck by corndonnus March 11, 2010