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1. 2-1-3
Two Definitions:

East Coast: A shitty game played with darts

West Coast: A gang call/sign from the Pirus Road Bloods (east side Compton turf). The sign can be made either vocally or with the hands. 2-1-3 is the Compton area code.
East Coast: U wanna play 2-1-3?

West Coast: Oh, shit, nigga, 2-1-3!
2. 1, 3, 5 rule
When using public bathroom, using urinals, 1, 3 and 5. No 2 and 4 just in case others come in. Never be next to another man using a urinal. Also no talking why using the bathroom.
WTF, your in 2!!
So...
1, 3, 5 rule!!!
3. 1.3 patch
The patch for Battlefield 2, a game by Digital Illusions CE, that completely ruined the game, opening great new possibilities of exploting/cheating and unleashing the entire new dimension of bugs and glitches.
"Holyshit, now it takes me 5 minutes to verify client data instead of 30 seconds and the game crashes to desktop every hour! And those Karkand hotel glitches keep killing me as I pass by... Guess I'll just go back to the lovely CS: Source now. Damn you, 1.3 patch! Damn you patch-making monkeys!"
4. 2-1-3
In a game of east coast darts the act of throwing one dart in each of the three different scoring regions. (East Coast Definition)
In the 8th inning Pizzy threw up the 2-1-3.
5. <2+1
another way for <3
which is a heart sideways
meaning love
Julie: i g2g
Max: ok i <2+1 you!
6. <2+1
a retarded way to write <3...aka "love"/"like". used mainly by preteen girls/gay guys when talking about the prepubescent, voice cracking, girl pants wearing "boy" of their affection.
omgz like i totally <2+1 nick.
7. <4-1
Another Way Of Writing <3. e.g. <4-1=<3
Myspace Comment: You Rock!!! <4-1
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