The power that a man with a large gaping asshole wields over those who lack this libido-stimulating rectal virtue. See goatse
mortal: Wow! - your asshole is inflamed, gaping, and smells similar to a mixture of stagnant bloody stool and rotting fishheads. Can I touch?
goatse man: Tremble before me and worship, ye mortals. Lo! - my asshole shall enslave thee and thy brethren.