Grundlemuffin

What is Grundlemuffin?


1.

The placing of one's fist into one's grundle and letting it bake there for a minute, then removing it and punching another person across the face with it.

Bitch, if you don't shut your mouth, you're gonna get a big ol' grundlemuffin!

See dirty sanchez, grundle muffin, bitch slap, tea bag, teabag


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