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An American tourist woke up from a coma in Taiwan after celebrating the New Millenium party on New Years eve 2000. Where he commented to a local girl who was wearing a good-bye '99 T-shirt. " WOw you have big Nei Nei (Nine-Nines) tonight" go figure...
by Horng Wang May 11, 2006
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2
Pronounced 'nay nay'. Means vagina.
I hit her right in the nei nei
by Squidii May 12, 2015
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