Top Definition
A noob on any multiplayer game who has just gotten the game because it was his birthday. He also maybe be overly announcing the fact it is his/her birthday.
*Player gets killed by a Default Class*

Player 1- Im' a cool kid you stupid head! Btw, it's my birthday!

Player 2- Wtf? I got killed by a birthday noob
#birthday #noob #game #multiplayer #professional #cool kid #birfday noob #b1r7hd4y n00b
by ChewyBuoyEel September 24, 2011
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