The act of performing cunnilingus while eating a savory McDonald's Egg Mcmuffin. The greasy slurry of half chewed egg, ham, and English muffin acts as a natural lubricant and flavor enhancer. A must for any lesbian fast food enthusiast.
I'm so glad I made it on time for McDonald's breakfast. What's a Sunday morning with the the Wall Street Journal and a little Mcmuff diving?
by Dlinkquent June 17, 2009
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Dave: did you take home that fat girl from McDonald's?
Chubby chaser: ya bro, I even gave her a mcmuff dive.... Twice.
by Illtryanythingtwice December 5, 2013
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