What is Rosanna?
1.
a highly prude, yet sexually attractive, female that presents a facade of innocence. Usually found to be very active sexually with many individuals, both male and female.
Wow, she's a Rosanna.
Watch out, man, she'll pull a Rosanna on you.
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2.
A fat, racist bitch whose ignorance is out matched only by her girth. Frequently spotted in St. Louis.
That Rosanna girl is retarded.
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