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1.
A Mastrantonio is a very hairy person. He is referred to by African Americans as "the hair nigga"
"Damn yo, he be the ill Mastrantonio" or "such a good mastrantonio!"
by Sugar Sean April 10, 2003
 
2.
A hairy ape, possibly a G unit. Likes bannanas and eating things from his hair. EXTREMELY HAIRY and wats to become a physicist
you are a mastrantonio.... damn your hairy.
by Shane March 20, 2003