A term used by war video game players, particularly Call of Duty and Battlefield nerds. A 'Wargasm' is supposedly an orgasmic sensation felt when a player goes on a rampage or killing spree. Nerds claim to shout or scream when they get 'Wargasms' and they also claim that the sensation enables them to get multiple kills in a short time.
Nerd #1: "I just got 5 kills!"
Nerd #2: "Wow! Did you get a wargasm?"
Nerd #1: "Yeah I just got a really long wargasm!"