.99 caliber 

A firearm capable of decapitating an elephant with one shot.

Chuck Norris keeps a .99 caliber... INSIDE HIS REAL GUN.

.99 caliber by we found a problem January 4, 2009

99 firemaking 

A skill cape from Runescape, the online game, it may or may not be a sign of a girl that is a 'bitch' or 'bitchy' in nature, usually signified if the cape is 'untrimmed' or worn at all times for no reason whatsoever. It is just a trend that I've noticed throughout playing the game, that most of the girls that you'd consider 'shallow' have this '99 firemaking cape' since it is most likely the easiest to get and not all that time consuming if done correctly. Although, if the cape is 'trimmed' then if it was the FIRST cape that they got, the same effect should hold true.

person without 99fm - *shows definition to girl with 99 firemaking*
girl with 99 firemaking - EXCUSE ME?! i wear my UNTRIMMED FM CAPE 24/7
so smd

99 firemaking by Da Cheet December 17, 2008

99.9 

Almost one hundred percent positive; however still leaving slight room for error.

Guy: You were pretty drunk last night. Did you eat the last frozen pizza?

Roommate: No.

Guy: You sure?

Roommate: (Shrugs) 99.9 anyway

99.9 by Ventghal February 27, 2008

99/9

An expression of joy, happiness and tranquility.Pronounced nintey nine nine it's used by Toyota Prius owners when their MPG indicators max out at 99.9 miles per gallon.

How are you doing today? I just got promoted and my asshole manager got fired so I'm 99/9.

99/9 by vivian darkbloom May 25, 2007

99 STR 

99 STR is and adjective used to describe someone really strong or someone with 99 strength in runescape.

OMFG that guy must have 99 STR or something!!!

99 STR by Mobro7 April 29, 2011

99 percenter 

When you pee and can't get that last 1% out due to:
A) morning erection
B) being in an area where it would be too embarrassing to fart (the fart needed to release that 1%).
C) combination of both.
Often resulting in an embarrassing urine stain on shorts, pee of our, discomfort due to wet genitalia or a combination of above.

Usually causes more net embarrassment than the necessary fart would have caused.

'The bathroom at the shop is next to the hot secretary's desk. Didn't want her to hear me fart so had to pull a 99 percenter. That's why I have that piss spot on my pants...FML!"

99 percenter by Cath8r/Rob bert March 9, 2015

99 bananas 

cheap alcohol usually found in tiny 50ml $1.99 bottles at gas stations and grocery stores. Has 49.5% alcohol.

Me and the boys used to steal some 99 bananas the gas station.

99 bananas by mendaboys March 29, 2020