Verb: to express massive emotional venting after having defeated a foe in any situation, be it a game, real life, etc.
Person1: Oh my god, I just killed sephiroth. GIH-AAAAAAAAGGGHHHH
Person2: He okay?
Person3: Yeah, he just had a battlegasm.
Person2: He okay?
Person3: Yeah, he just had a battlegasm.
by shocker_ July 29, 2009
Sarah was so loud last night that I had to use headphones. The ass slaps were bad, but the squealing erupted into a game of battlegasms.
by StephyTephykins December 01, 2014