Orc Genesis Myth
This is from Monster Mythology (as far as I can remember):
The high gods created each a race that best reflected their view of "ideal": Moradin created the dwarves, Corellon created the elves, Garl created the gnomes, Yondalla created the halflings, someone created the humans (they can't agree on which god created them) and Gruumsh created the orcs.
Then they divided the world among their races. Mountains went to dwarves, forests to elves, hills went to gnomes, halflings chose wandering and humans would hook up wherever they could make a living. As the orcs tell, the other gods laughed at Gruumsh, saying there was no room left for orcs. But Gruumsh hefted his spear and said: "My children have a place! There!" and he struck the mountains, creating vast canyons. "There!" and he struck the forests, creating barren wastes. "There!" and he struck the hills, creating swamps. From the orcs' point-of-view, they're always fighting to get back what was wrongly taken away from them.
Here's where Gruumsh declared war on the other gods and their races, and then Corellon struck out his eye.
Paranoid little buggers, aren't they?