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1.
The ASCII weapon of choice for 1337 h4x0rz everywhere. Can also be used just like the phrase "kk", but has a greater emphasis when used in response to a statement. Fires n00b-piercing kk-bullets
ki11z0n3: Omg ill brb g2g eat omgwtfbbqpizza :D k?

0ddR0bb: kk-47 !

Other example:
n00b: hay guyz! look at me im kewl!!11

1337: Gtfo n00b b4 i prawn u with my KK-47!
by Afrohorse November 06, 2009