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Pure awesome-ness. Also can be used to refer to a sexy bitch. Very popular girl amongst most guys.
James: 'God, that girl is so fit.'
Chorus of guys: 'That's Nikki G.'
(often followed by an awkward silence.)
by Sexy-Beatch March 11, 2010
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A really big, ugly, bitchy girl. Most likely one of the Biggest Ugliest and Bitchiest. NikkiG's usually listen to really shitty emo bands such as Escape the Fate.
Yo did you see that NikkiG, she's so ugly and bitchy.
by ZomgItsZane April 04, 2007
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