1 definition by hi my name is: idon'thaveaname

Nini's are weak people who let people like boyfriends and girlfriends take control of their lives. they are easily manipulated, and they cause all of their own drama. Nini's are people to stay away from because even though they bring fun and good times, they eventually cause you the most pain. It's not worth it.
Why aren't you and Sarah friends anymore?

Because as soon as she got a boyfriend she went all Nini on me!
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