Nubn

It's a newly form of "Noob" People like to say Nub instead of Noob and it basically means the same but when people get mad in a video game and try to say nub sometimes they write nubn...

N.U.B non-useful body (also as an idiot/player)

Oh my gawd i was out of ammo and i still killed you even though you had the machinegun on my face! What a Nubn...

It's Nub...

Whatever..