Niner's Bitch 

An extreme fan of a football team, in this case, the 49ers. The difference between a Niner's bitch and a Niner's fan is that a Niner's bitch thinks his team is a lot better than it is, while a Niner's fan accepts that the Niner's do in fact, suck dick.

Kevin: That faggot Parsa is such a niner's bitch.
Michael: Seriously, I can't believe he bet you $20 the Niner's would make the playoffs.

Parsa: THE NINER'S ARE GONNA GO 13-3 THIS YEAR AND YOURE GONNA OWE ME A FRANK GORE JERSEY YYOU FUCKING EAGLES BITTTCHH.

Niner's Bitch by NotAnEaglesBitch March 9, 2009

Niner Shiner 

A whore or slut, also used to describe a homosexual.

That chicks a niner shiner!

Niner Shiner by ninershiner January 12, 2009

Niner Syndrome 

Niner Syndrome is when freshmen come to high school and think they're the shit, just because they were the seniors back in middle school last year. Niner Syndrome can result to an unnecessary boost in ego, thinking you're the shit, talking to everyone like you're bigger than them, thinking you're the most important person around, etc.

Alex: Dude, what's with all of the Niners this year?
Dave: They have Niner Syndrome.. but a nice initiation should be the best medicine!

Niner Syndrome by Diabba September 4, 2011

i'll have two number nines, a number nine large, a number six with extra dip, a number seven, two number forty-fives, one with cheese, and a large soda 

Big Smokes order in: GTA San Andreas

Big smoke: “I'll have two number nines, a number nine large, a number six with extra dip, a number seven, two number forty-fives, one with cheese, and a large soda.”

i'll have two number nines, a number nine large, a number six with extra dip, a number seven, two number forty-fives, one with cheese, and a large soda by ChrisJerichoFozzy June 7, 2018

sick nicers 

a reference to all things positive. popularized in the classic hit "Sick Nicers" written and performed by Beverage Tunx.

That bird has a great set of sick nicers; that's fucking sick nicers!

sick nicers by Slimmy Hollywood February 10, 2005

stacking nines 

Snitching

The Greek was stacking nines and now no one talks to him.

stacking nines by Gang guru November 22, 2013

Seventy niner 

Any individual born in the year 1979. Being born in 1979 makes a person infinitely more superior than any individual born in any other year. The only exception to this may be a sixty niner, someone born in 1969, but the jury is still out.

That guy Gerald I met the other day is pretty cool.

Of course he's cool, he's a seventy niner!

Seventy niner by BigHonky September 5, 2013