Top definition
To fuck up, mess up or destroy. Word originates from Cheboygan, Michigan.
I gotta take a dump. I'm gonna mastify the toilet!
by Buckostar November 16, 2010
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Aug 9 Word of the Day
Large, beautiful breasts that are keep well consealed and initially appear to be much smaller and less impressive than they actually are until unleashed.
I think Alicia may have some real sleepers.
by KABT October 26, 2007
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