On Micturition

It is as though primal man had the habit, when he came in contact with fire, of satisfying an infantile desire connected with it, by putting it out with a stream of his urine… Putting out fire by micturating… was therefore a kind of sexual act with a male, an enjoyment of sexual potency in a homosexual competition. The first person to renounce this desire and spare the fire was able to carry it off with him and subdue it to his own use… Further, it is as though woman had been appointed guardian of the fire which was held captive on the domestic hearth, because her anatomy made it impossible for her to yield to the temptation of this desire.

—Sigmund Freud, Das Unbehagen in der Kultur, pp. 42-43