A person whose sole purpose in life is to go on games and believe that they are in the games. Usually fat males in their teens-twenties who join games, abuse the casual players and think they're amazing even though they're pathetic because their thumbs are too fat to move fast enough, so they become hackers so that they appear amazing. Generally the lowest form of life on the planet, just below bacteria. Also can own a PS3 and become a PS3 nerd.
Casual Player: This game should be fun...
Xbox nerd: SHUT UP NERD YOUR A NOOB I'M AWESOME AT THIS GAME YOU HAVE NO LIFE!
Casual Player 2: Fucking xbox addict...
fat ass kids with no lives. they get extremely pissed and cry about failed achievements.
my fatass ginger brother jake is an xbox addict.