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
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.
Niner is a rite of passage ceremony marking entrance or acceptance into a group or society in High School, required for grade nine students to be fully "accepted" into the student community.
Another word that could be used for this term is Initiation. However niner is a more specific term referring only to grade nine initiations.
This type of initiation is mostly done in school trips that require students to sleep over,(for example; Muskoka Woods camp) and at night around 1:00 to 3:00 AM, grade 11 or 12 students would wake up, and go around "initating" niners in their sleep.
This term is a new type of initation, started in Bishop Allen Catholic High School, in Toronto, Ontario, Canada.
The following could be considered ninering, having your hair sprayed into a vivid color, usually green, having shaving cream sprayed on your face, or make you do ridiculous things (if not in a school trip.)
Niner is a versatile word that can basically mean any word that you didn't feel like trying to think of at the moment. It can also be an exclamation, an insult, or a substitute for a name. Alternate spelling: 9er
"Niner!"
"Hey 9er what's up?"
"Hey look at that 9er over there!"
"Could you hand me that niner?"
"Cripes you're such a niner."
"Studies show that these 9ers (point to something) have significant migration during the winter."