The condition in which the person, (nerd), becomes enraged due to a certain incident that he did not like which he was involved in during a game.
Gamer 1: Ahaha, I totally owned that nub.
Gamer 2: I just killed you.
Gamer 1: WTF?!?!? DUDE WTF, I WAS TALKING TO YOU. NO FAIR, REMATCH.
Gamer 2 to 3: Ahaha, that noob totally had a nerd rage right there.