p00b
A p00b is a person you call when you're being a smug idiot. It can be a compliment or a slap in the face, depending on who you're calling it on. The best p00b is the p00b master, who started the whole thing and still cusses at people in RuneScape.
@jimmy: You're a p00b, bro.
@sarah: I'm not a p00b, I'm a legend.
@danny: You're a p00b and you know it.