The following are computer generated images of bondage and torture devices. (contains explicit images of naked, bound, human animal.)
In the land of Second Life, there is no lack of imagination. All conceivable devices have been brought into life sans shyness, medieval or modern science.
In a Glory hole, a man sticks his penis thru a penis-sized hole in a wall, and anyone on the other side can suck, and the partipants don't have to see the other's face. Here, the female's butt is stuck in a hole in the wall, rather in a forced way, for the other side to use.
This device is actually found at a she-male club. Where, they talk about feminification (or sissification), where, (willing or unwilling) men are induced to become women (by various physical, chemical, psychological, and biological/surgical treatments). For example, in the above you see a partial sign that says Sperm Addition. It means to psychologically condition men under feminification to love sperm. (by, for example, always mixing sperm smell or texture in food when the sub is hungry.)
Conditioning (and training) is a popular theme in SM culture. (As a example of conditioning: most people will feel elation when seeing acoholic beverages, even before ingestion. Because, as a common socialization practice in developed nations, most people have learned by conditioning to associate it with the happy feelings of party and carousing.) For more about the subject, see: Classical conditioning.
In the BDSM community, there's a concept called human furniture. The idea is that humans are bound and rendered immovable and objectified in such a way as furnitures. For example, the idea is featured in Stanley Kubrick (1928 〜 1999)'s 1971 film A Clockwork Orange. 〔➤ A Clockwork Orange screenshots〕
In Second Life, these human furniture devices come to life.
See also: Human Furniture (photo gallery).
Not particular to sadomasochism, but there is a sub-culture of human sexual practice of those who are fascinated by pissing and or shitting. For example, they like to douse or shower in the substance, or force or be forced into it.
For more info about this practice, see: golden shower.
Note that, drinking fresh piss from a healthy human animal, is harmless, in fact drinking one's own piss is practiced by some fakirs for purportedly health reasons. See Urine therapy.