Why are you still offended by this? The word noob is as common as saying hello. It's almost expected.
"Hi noob!"
"Great to see you noob! Where've you been, noob?"
"Well noob, I was fighting some noobs lately at this nooby place full of noobs."
"WTF STFU U STUPED NO0BS GO KILL URSELV BECUZ U SUK!"
"Wow, what a noob."