A term that is used to refer to someone who is being ridiculous, silly, or who is slightly off their rocker. Often used affectionately.
Mr. Holt, you are being quite a ninny today.
Bobert: Wow, that kid that plays runescape is such a ninny. I stole all his money, ate his girlfriend, and fed him to a boar and he didn't even think twice about it!
Sam: Hey man, wanna play some b ball?
Cheechee: Well, I uh, I kinda wanna play some more runescape.
Sam: You fucking ninny.
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1. a stupid or silly person, an idiot (from nincompoop)
2. a woman's breast (usually plural)
You are such a ninny these days.
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Ninni is the most weird girl in whole school. She get's mad really easily but also forgives easily. She has brunette hair and probably wears glasses. Ninni is not very popular, but still has some amazing friends. She is also very kind and lovely.
she's so ninni!
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A hardcore Nine Inch Nails (NIN) fan
That chick is such a NINny she bought a blow-up doll and named it Trent Reznor
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