Nerd Rage
A term used to describe the condition of an RPG nerd who is extremely angry about a gaming issue a normal person would consider trivial.
Below is paraphrased example of nerd rage from the MMORPG World of Warcraft:

raging nerd: You fucking stole my Cloudsong!

normal guy: Calm down, it's only a game.

raging nerd: Shut your fucking mouth! 