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An adjective that describes a living thing, usually an animal. It is used to express amazement and wonder. A combination of Lady Gaga, Justin Bieber and Rihanna.
Guy 1: OOOOOOO look at that fish!!

Guy 2: ITS SUCH A GUSTINANNA!!! <3
Guy 1: Wow. She's hot.
by gustinanna June 21, 2011
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