What is Grundlemuffin?
1.
The placing of one's fist into one's
Bitch, if you don't shut your mouth, you're gonna get a big ol' grundlemuffin!
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1.
a humorous yet upsetting defilement of military formation made famous by the "operation lion claws military simulation series"..
1.
A person (male or female) that often has cankles, is either grossly overweight (we're talking ripples and folds upon folds here) or..