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.
by Jarrin Dennis February 17, 2004
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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
by yungjonasty November 12, 2020
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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*
by elephantPARADE June 22, 2009
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A niner is not just what you call freshman at high school it can also be anyone at any age. Anybody who messes something up in their life is considered a niner.
Mclellan: I just lost all the money that I invested in this company

Mr Chittle: You stupid niner
by The Chocolate Leopard April 11, 2010
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Word used in the NATO Alphabet(phonetic alphabet) to represent the number 9
by TheRogue February 10, 2013
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slang for SanFrancisco 49ers.
" love ya niners!!"
by herbie February 1, 2004
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The ultimate and unbeatable rack in beer pong. Sink the first cup and ask for a rerack: the niner in a power I formation. You can't lose, it's physics.
Ya man, that team was running the table all night using the niner.
by dropping rocks April 6, 2008
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