Friendly way of saying Fuck Muffin. Formed by switching the m and the f. Used often as a substitute for the yelling "shit!"
by My Diablo Man January 14, 2011
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Muck Fuffin • MUCK • muck-muck • muck fuck • muck out • muck savage • muck spread • muck spreader • muck booter • muck chucking