A tree, of sorts. Most commonly found in the Province of Saskatchewan, who spends most of his time carrying fails in Heroic Dragon Soul. On other news, in their natural habitat they will often be found using the word "guy" before every sentence and rather vulnerable to incendiary grenades (as well as chocolate). Moose are quite often within the area of a Trifire and his uncle is always bound to own a christmas tree farm.
Anal Sex, the origin was a Blizzard video game called Starcraft, where a transport ship would say what sounds like "in the butt five five five" hence tri-five for in the butt, aka anal sex.