One who has no common sense, tact, or inhibition. Often blurts things out and acts without thinking all the way through. Often attacks people who did nothing to provoke them. Also lacks social cognition and has only video game multiplayer as a social medium.
"Look at that Onufrak attack that little girl after she asked he move so she can get her bag."
"Yeah I bet he'll go home and play Mass Effect, and rip on people who did nothing to him."