A childish, non-explicit word for boobs or breast. My mom’s friend got breast cancer (and lived, thank goodness) a few years ago and all 4 of her kids went around telling everyone that their mom had ninny cancer.
by somethingforyourmind February 16, 2018

Ninniiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
Ninni, Ninnniiiiiiiiiiiiiiiiiiiiii
by dingdong ur religion is wrong December 2, 2019

Bud is one of the dumbest persons to have ever existed, he is a prime example of a cotton-headed ninny muggins.
by PhoenixGamer34 December 24, 2021

The process of being made a ninni. Being made to be a nincthat. The act of being lied to and believe it. That turns you into a ninni
by Wafflemuggins December 18, 2021

Your shallow knowledge of football coupled with your emotional assessment of your team’s performance is that of a ninny twit
by oldvelvet1943 November 5, 2023

An expletive used in response to another person attempting a 'mansplanation' of the difference between ASTROLOGY and ASTRONOMY. Frequently used to interrupt long supercilious diatribes on science, the occult, and the distinctions between them, .
T: "You know, there is a big difference between astrology and astronomy! Star signs are part of astrology. Astronomy is..."
M interrupting: "Astrology, astronomy - what is the difference?"
T: "There is a big difference. Astronomy is based on science. Astrology and star signs is not but rather..."
M shouting: "ASTRO-NINNY!" End of the conversation.}
M interrupting: "Astrology, astronomy - what is the difference?"
T: "There is a big difference. Astronomy is based on science. Astrology and star signs is not but rather..."
M shouting: "ASTRO-NINNY!" End of the conversation.}
by Sleap Reeder June 9, 2022

by Cheerios4ever October 26, 2020
