Before im fired or sacked about my opinion on this word, I would like to say "with a silent mummbled voice"
"i'm 33 years old and.. ive been around online games from birth" DUKE NUKEM 3D FTW, and the rest is only a guess with experiance!
Anyway.. the word noob.....
This word started off as "Sorry im new" After a few years it turned into...
"LOL you were killed by some one new"
Hence, (your skills aint doing much here)
next was "you be new" or "are you new"
Eventually the Character that was "new" was recondnised as low skill no matter what game.
This Character is now known as a noob. Popular as this word is now......"Noob" can be used anywhere " what an idiot" what a noob"
thank you for reading this and being even more bored now

if u see any typos then good for you :) i cant be botherd to correct.