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.
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!
9π 15π
A hardcore Nine Inch Nails (NIN) fan
That chick is such a NINny she bought a blow-up doll and named it Trent Reznor
12π 22π
Just an area of the breast per se.
I am freezing my ninnies out here.
4π 5π