to be so fat that one is a descendant or eluding to possible relation to thee "Michelin Man" (man made of tires, cartoon)
Instead of saying, "Shut your fat ass up."

One would say, "Shut your Michelanian butt up."

Another way to use could be

"Move your Michelanian self out of my way."

or
"Keep your Michelanian mouth shut."
by Queen Mercedes December 11, 2012
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