Originally an alien race of large lizard people in the original Star Trek that raided the outer colonies untill Captain James T. Kirk shot one with diamonds and improvised gunpowder. They are now known as extremely anoying blog or YouTube commenters that aren't trolls but ignorant people who can't understand humor or irony and are quick to troll rate. Much like the Gorn that Captain James Kirk so righteously shot, the are unemotional reptiles that hiss.
JamesTiberius: Check out the video of this guy getting gorged by a Buffalo in Colorado after he cornored and tried to pet it.
G0rnHegemony: This is unacceptable, I am troll rating you!
JamesTiberius(-1): you are an f'ing Gorn!