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.

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mumble-grumble

the need to take a massive intense shit

ive been holding this mumble-grumble all day.

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Grumble Mumble

verb - it is when a person shakes his/her head looking downward with a melancholy look on his/her face while making a soft grunting sigh

John: Why are you so lame?
Sunny: *grumble mumbles*

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