n00baholic
A person who can't stop bashing n00bs and spends all day yelling at them like they're annoying little kids.
"You're not even a real gamer! You're just a n00b!", @NoobBasher999
DM: "Why are you still playing like a n00b?", from someone who plays like a n00b
In-game chat: "You're a n00b and I'm gonna beat you like a n00b."