%00 

This ,people is the null byte . It is often used to confuse servers and get them to execute our own code.

PATH%00
PATH0x00
PATHalternate representation of NULL character
<script></script>%00

%00 by Player87 June 5, 2018

00 

Year 2000.

1/31/00
Means January 31, 2000.

00 by udusers1 November 13, 2011

0⁰ 

Still a mystery, is it 0 or 1?, Or even ∞?
Literally the same as 0×0

Person: what's 0⁰?
Person 2: "Error! Brain.exe has stopped working!"

0⁰ by Mike2000 November 28, 2020

00 

The lowest you can hit.

"Life is like landing on double zero"

Less than zero but greater than a minus value

00 by 00 March 13, 2003

00 

A term sterotypically used by the emo group. It is often added to items such as an email adress. Found frequently on Bebo and MySpace and used in MSN names. Pronounced 'Zero Zero' or 'oh oh'.

Bebo name:
Julia May <cowonthemoon00>
Emma Heweson <embog00>

MSN:
geegee00#~
Emma00

00 by Peter1122 October 18, 2006

00 

girl on girl.

0=pussy
1=dick

"i like to watch 00" -pervert

00 by ben dover + seymour butts January 18, 2010

:00 

Denotes the time - pronounced "o'clock" , less strong than :30. Used after a word to denote that it is time for a certain act to occur.

Dude, it's beer:00 - time to go drink!

:00 by Eric.... October 2, 2008