Originating in the Blizzard game Warcraft: Orcs and Humans(1994) The orcish warriors use the term "Loktar" meaning "Hello". The term is also used in Warcraft II: Tides of Darkness, Warcraft III, and World of Warcraft.
Common Orcish for "victory", despite what other morons on Urbandictionary say. It is actually written "lok'tar" and is really one word. Oh, and "lok'tar ogar" doesn't just mean the same thing, but rather means "victory or death."
Hey man, let's gank these alliance n00bs! Lok'tar ogar!