Top Definition
The worlds most amazing sister. This person will be there for you at all times no matter what. And usually is the worlds best singer
random person- "Who is that"

another cool person- "Mary-Michael, the worlds best sister"

random person- "I heard she sings like a angle"

another cool person- "Yep, that's her for sure."
by Smileyourbeautiful! October 15, 2010
1 more definition
Mary-Michael is primarily found in Western Pennsylvania but elusive sightings have been reported in Central Pennsylvania, Warren Co, Pa, NYC, DC, VA, Florida, NV, MA, and other parts. Primarily Mary-Michael is a positive experience that leaves one with a feeling of happiness, relief, creativity, and excitement.
Mary-Michael left me confused but wanting more.
by mary-michaelexpert February 04, 2010

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