Niñerz

A SF Bay Area term, for someone to refer a thing or an action is either great or lame.

Dam! That girl is looking hella niñerz ! (Good looking)

Dude hell no that plan is hella niñerz. (Not cool)

Niñerz by Niñerz November 15, 2020

on the niner 

act of standing against a wall to cause the effect of invisibility.

Hey wheres billy. oh there he is, he must have been on the niner.

on the niner by Jarrin Dennis February 16, 2004

Niner-niner 

When you say something so stupid, that your friends question your mental stability.

“People in Denmark speak Denmarkese right?”

“Oh my god, you’re a fucking niner-niner”

Niner-niner by yungjonasty November 11, 2020

Ninety-Niners 

Lab slang describing a group of quantum-computing researchers that has prepared a Bell-state using a two-qubit entangling gate with a fidelity equal or higher than 99 %.

German lab rat: The Raman laser is not locking again.
Indian lab rat: Hold my beer, I’m tweaking the PID parameters.
Spanish lab rat: Come on guys, without sideband-cooling we’re not Ninety-Niners anymore!

Ninety-Niners by Hyonoko September 28, 2021

Forty niner 

A woman who is a 4 but thinks she is a 9

Hey bro, look at this tinder thot forty niner requiring men be 6 feet tall, 6 figure income, looking like a model, and they are broke, far and aren’t even cute.

Forty niner by MGTOW September 10, 2019

Ground Point Niner

In aviation, "ground" control is always "121" in the first three digits of the frequency. In this case, Ground point niner would be "121.900".

Boston Tower: American 1070, cross runway four left and four right via Charlie, then contact ground point niner on the other side.

Ground Point Niner by BostonTower July 8, 2007

Ninering 

When a new school year begins, and the older students decide to point the Freshmen (Grade 9's) out.

In ways, by chasing them around school and drawing dicks on their faces.

NOTE:Only Grade 12's can achieve this prank; younger grades should ask the Grade 12's.
Originating in Toronto,Ontario.

Grade 11 :Hey Man, check out that grade 9. He is annoying, why don't you go Niner him for me, please?
Grade 12: Sure, just let me grab a marker and some tape and start Ninering.
*chases freshman*

Ninering by elephantPARADE July 1, 2009