The Gods Never Urinate
It’s true: the gods never have to go pee.
Unless they want to, that is. But they’re never inconvenienced by it. As far as I know, never in the history of human mythology has a divine being hurried someone else along during a meeting, or interrupted some vital piece of work, to relieve themselves. Even nature deities, whom you’d image to be most in tune with this sort of bodily necessity among the living, and, presumably, have some sway over its function (or lack thereof… yow!), don’t seem to bother with it themselves.
Eating? Sure, okay.
Sex? Yes, please.
Excretion? Nothing beyond normal breathing, thank you.
And that is the true magic of deities, and why fantasy is destined, on the longest scales, to have greater longevity than science fiction. Because fantasy never gets brought down to the level of the mundane. It never misses a mark that reality has hit square. Science fiction, for all its glories, inevitably diverges from reality, and rarely for the better. We expect science fiction to be somewhat oracular, in that the technologies and situations presented remain plausible.