A saying spoken by someone who is discontent.
A - What's going on, B?
B - Grumble grumble.
A - I get it, I'll leave you alone.
by alex.lastname November 1, 2016
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Usually said when one feels annoyed or frusturated
"I totally failed that test! Grumble grumble..."
by mansonfreak August 5, 2009
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