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2.
When a male or female suffering from muffin top continuously adjusts their pants and undergarments over their hips to stuff the muffin.
The cleaning lady keeps muffin stuffing.
by Jeff L & Meghan M January 29, 2010
 
1.
the act of having sexual intercourse with an obese woman.
I told my roommate Kevin no Muffin Stuffing in the apartment, but needless to say that rule was soon broken.
by Big Game June 28, 2006