Frequently used by "script kiddies" to make themselves feel like hackers.
A sure sign of a genuine loser.
Please note that a genuine hacker of any real skill will shun the use of "d00d" speak, or "dud-spek".
"Hey! I just made this l33t util that will hack the password file of WinNT! I am so 133t!"
"That tool has been around for years."
"No it hasn't! I just made it myself!"
"Okay then, what language did you write it in?"
"I wrote it in Windows of course! What else would I use?"