a pushover, like a noob.
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.
by Ninny Barberino December 17, 2006
A shorten version on Ninconpoop. "Ninny", is used in "Hey Arnold!" and "Rugratz". "Ninny's" most of the time have brown hair and some have double chins. "Ninny's" are laughed at, not with.
"Your a Ninny!"
by Tommy234 February 05, 2011
the lower part of the female reproductive tract; a moist canal in female mammals extending from the labia minora to the uterus; "the vagina"
I shave my ninny everyday
by Anna Furb January 07, 2010
A person who claims to be a fan of industrial music, but really only knows the band NIN and has a sychophantic reverence for Trent Reznor. Will ONLY shop at Hot Topic and thinks usually they are "More-Rivet-Than-Thou".
Me: So, what kind of music are you into?
NINny: Industrial. I am so fucking rivet.
Me: What bands do you like?
NINny: Nine Inch Nails. I LOVE Trent Reznor.
Me. Fucking NINny. It looks like Hot Topic threw up on you.
by ZEROMACHER May 29, 2008
1. A insult for kids that worship Nine Inch Nails and Trent Reznor

2. Something more shallow than Mansonite.
"You see that lame ass kid with the spiked up hair and the fuckin' NIN shirt?" *said while taking a drag on a clove*
"Woe is me..He's a NINny." *gets beat up by a rivethead*
by Kevorkian Hallucinogen October 19, 2004
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