99 

BUTT FUCKING.

yeaah we were 99ing all night, now my ass is sore.

99 by rainbowhamburger July 12, 2010

99 

To have a poo that has the consistency and look and is similarly emitted to that of an ice cream you had in the UK from the ice cream man, costing 99p.

I've Just had a nice easy poo, it came out like a 99 !

99 by Apoclamite March 16, 2023

99 

goog night.. as g`nite

9=g 9 which is nine therefore night.

g`nite

99
=
g`nite

good night!!

99 by iono May 13, 2005

99 

Used by people on IM programs to tell the other person to "shut up, my parents are watching".

Maddog: Hey Sarah are you up for some sex?
Sarah: Sure thing when do you want it?
Maddog: 99
...
...
...
Maddog: Sorry my mum walked in.

99 by bublnsqeek August 10, 2005

99 

A term used to describe a "9 to 9" job or simply to describe working hard all day.

Ice Cube uses the term at the beginning of one of his songs. He simply says "99...On the grind"

99 by Gangsta16 December 28, 2005

.99 

Another way of say tight, sweet, and wicked awesome. Deriving from the word cool, .99 has become a popular word among high school students on the west coast of the United States

Man that ride is so .99!
you look really .99 man!
That guitar riff was totally .99!
you're really .99!

.99 by Aaron and Michelle March 22, 2009

99 

cudding in a non-sexual way. Usually from back to front.

gf: wanna 99?

bf: sure

99 by Krabbi May 14, 2021