What is Crusty Muffin?
1.
To eat a girl out. As in oral sexual intercourse with a female. Commonly related to a "muff dive".
Matt:"Dude, I totally ate a crusty muffin last night!"
Kevin:"Really, was it warm, fresh and tasty? Did you spell out the alphabet??"
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5 - Not quite the worse thing you could do to society, but still you'd be better off dead because generally the only tolerable fash..