It is worthy of note, as an indication that such phenomena are
    scarcely abnormal, that a urinary symbolism, and even a strictly
    sexual fetichism, are normal among many animals.

The most familiar example of this kind is furnished by the dog, who is sexually excited in this manner by traces of the bitch and himself takes every opportunity of making his own path recognizable.  “This custom,” Espinas remarks (Des Societes Animales, p. 228), “has no other aim than to spread along the road recognizable traces of their presence for the benefit of individuals of the other sex, the odor of these traces doubtless causing excitement.”

It is noteworthy, also, that in animals as well as in man, sexual excitement may manifest itself in the bladder.  Thus Daumas states (Chevaux de Sahara, p. 49) that if the mare urinates when she hears the stallion neigh it is a sign that she is ready for connection.

It is in masochism, or passive algolagnia, that we may most frequently find scatalogic symbolism in its fully developed form.  The man whose predominant impulse is to subjugate himself to his mistress and to receive at her hands the utmost humiliation, frequently finds the climax of his gratification in being urinated on by her, whether in actual fact or only in imagination.

In many such cases, however, it is evident that we have a mixed phenomenon; the symbolism is double.  The act becomes desirable because it is the outward and visible sign of an inwardly experienced abject slavery to an adored person.  But it is also desirable because of intimately sexual associations in the act itself, as a symbolical detumescence, a simulacrum of the sexual act, and one which proceeds from the sexual focus itself.

Krafft-Ebing records various cases of masochism in which the emission of urine on to the body or into the mouth formed the climax of sexual gratification, as, for instance (Psychopathia Sexualis, English translation, p. 183) in the case of a Russian official who as a boy had fancies of being bound between the thighs of a woman, compelled to sleep beneath her nates and to drink her urine, and in later life experienced the greatest excitement when practicing the last part of this early imagination.

In another case, recorded by Krafft-Ebing and by him termed “ideal masochism” (Op. cit., pp. 127-130), the subject from childhood indulged in voluptuous day-dreams in which he was the slave of a beautiful mistress who would compel him to obey all her caprices, stand over him with one foot on his breast, sit on his face and body, make him wait on her in her bath, or when she urinated, and sometimes insist on doing this on his face; though a highly intellectual man, he was always too timid to attempt to carry any of his ideas into execution; he had been troubled by nocturnal enuresis up to the age of 20.