Scat:

Clearly, if people were eating nothing but human meat, no one would survive very long. They don't. Much cheaper than meat is poop. At the fanciest of places, they will serve only meat and offer larger portion sizes. As you go down in fanciness, you get dishes that include both meat and poop in some way, or get offered a side of poop much the same way that McDonald's offers a side of fries. Ground meat products, like burgers, will often have a mixture of ground human meat and poop, with the exception of the highest quality burgers which are all meat and shit-burgers, which are all poop. The lowest income individuals may never get to taste meat.

There are farms where people are fed things specifically to flavor their piss and shit to have it sold as a slightly better product. These are things that are considered food in our world, like asparagus, but not in this fantasy's world. There is so little of these things available, that they're not widely known of. These farms are generally on the outskirts of society, in much colder regions. Clothing occurs here to a degree. The majority of people are unaware of the existence of these regions. They know the flavored products exist on their local grocery store shelves, but don't think about where it could've come from. Additionally, there are a variety of dairy products made from human milk, such as cheeses. It's extremely rare for a woman to not be lactating. Cum and blood are also used in various sauces.

Restrooms are unisex. There is a dividing wall in the middle that has all of the plumbing work as shown below:

http://i.imgur.com/xaimaSH.jpg

You can see from this why I don't draw any porn myself.

On one side, you have the sinks (which are shown there in dark blue), and on the other you have the stalls (which are shown as light blue). Each stall/sink combination has one person in it. The person's head is under the sink and their lower half is above the stall. If they're female, they're face down, in a doggy style position with their legs shackled open in a position that puts both of their lower holes at fucking height, leaving them open and available. If they're male, they're face up. with their legs shackled open and up, pointing their penis upwards and leaving their anus at fucking height, leaving it open and available. Under them, a waterless floor urinal is designed to collect whatever piss drips off the person into it's drain. The brown circles are an optional tube explained later.

A person enters, picks an available stall, fucks and/or pees on the person as they see fit, then walks around to an available sink, puts their genitals up to the person's mouth to get cleaned (and maybe pee just a little more, into their throat), and washes their hands. The collected pee is later used, generally as beverages. If it's a restaurant, for example, it fills a tank that dispenses into the kitchen to fill customer's glasses or fill pots for recipes that use boiling water. It could also wind up in the general piss supply that provides homes with drinkable piss (as it is this world's equivalent for water.)

If someone needs to poop, there are two different systems to do so. At the lowest quality place, there's a bucket. You squat over the bucket, aim your pee at the stall as usual, and poop into the bucket. A higher quality place than that would have a hole instead that sends the poop through a more automated system, but removes it fairly quickly from the area. In both of these scenarios, the poop is collected for use. If it's a restaurant, it's used in that restaurant. If it's not, it might be sold to one.

A fancier place might instead have a system of transparent hoses above the stalls. There are two sets of hoses. One bypasses the stall. The other has a face-mask on the right and a butt attachment on the left. To use this, you first put on the face mask, which unlocks the left side's attachment. Removing the butt attachment from the wall locks the face-mask's straps in place and enables that stall. You then put the left side's hose up to your anus, click the strap around you, and poop. When you're done, you un-clip and return the butt attachment, which unlocks the face mask's strap and shuts off that stall, allowing you to take it off.

The poop enters the transparent tubes and gets pushed around the track created for it. If a stall's face-mask is locked in place (which happens when you remove the butt attachment from the wall), when the poop reaches that stall, it goes through the face-mask's tube instead of the tube that bypasses that stall, getting forced into the person's mouth. The design of the mask ensures that none of it leaks out, so the person must eat it. The face mask will not unlock as long as there's any poop in its tube either. So, if only one person is pooping in this room, they will wind up eating their own poop. If their are multiple, each will eat the poop of the pooper to their right. If the last person's stall shuts off while poop is still in the tube system, it just goes around and around until someone else attaches themselves to the system.

If a place has multiple restrooms, a hotel, for example, their system will often be built to connect them all together, so poop from the leftmost stall of one restroom goes to the rightmost stall of the next. In this way, it becomes possible to get the cheapest sort of meal for free, as long as you hook yourself up to the restroom in a place that is at least mildly almost-fancy. Some people will still attach the face mask and take the butt attachment off the wall in hopes of receiving someone's poop, even if they don't need to poop, but it isn't necessary to do so when using the restroom just for sex and/or peeing.

If all of the stalls are in use, one could step in front of someone who's peeing, getting peed on as well, but allowing them to also use the stall for peeing or sex. If they're just peeing, or they're a guy, they could also go behind someone who's using a stall and pee on them or fuck their ass. If all of the stalls are full and someone needs to poop, they can still connect to a set of hoses or squat over the hole/bucket if one of the in-use stalls isn't being used for pooping.

In a more residential setting, when one needs to use the restroom, someone else will go with them & climb into the wall slot. This is most commonly someone the person owns, but can be anyone available. If someone is home alone and needs to go, they might ask to use their neighbor's restroom. If they need to poop, they'll usually collect it for use in a meal for someone else. It's common as well for people to casually pour drinks for one another of their own piss. Drinking your own piss or eating your own poop is taboo and looked at as something that only antisocial homeless hermits do.

The people in the bathroom stalls at public places are usually working something off. The first week spent on this is considered training and is not paid. After that week, they earn the minimum salary wage, counting only the first 8 hours of each day that they're in the stall. Occasionally, a worker will stop in to feed them, but it's the lowest quality shit. They may be working off the price of something they stole, which could be an item or a life that belonged to someone else, or often enough they're working off the price of an expensive meal after their date left without paying. It is common, at the end of a date, if one partner is not interested in pursuing the relationship further, for them to get up to use the restroom and simply not return, leaving their partner to pay the entire bill instead of just their half, which they almost always cannot pay and wind up working the stalls. There are occasional volunteers as well, who simply enjoy it. Rarer is the person being payed to be there, who has had trouble finding employment elsewhere. (It's the only job that pays minimum wage.) It's a bit uncomfortable, the piss gets sticky eventually, and staying in that shackled position 24/7 results in some cramping issues and such. They can often sleep at night when the place is closed, but if it's a place that's open 24 hours a day, they'll get woken up often and have trouble getting enough sleep.

The people in the bathroom stalls at public places are usually working something off. The first week spent on this is considered training and is not paid. After that week, they "earn" the minimum salary wage, counting only the first 8 hours of each day that they're in the stall, which gets paid directly to whoever they might owe. Occasionally, a worker will stop in to feed them, but it's the lowest quality shit. They may be working off the price of something they stole, which could be an item or a life that belonged to someone else, or often enough they're working off the price of an expensive meal after their date left without paying. There are occasional volunteers as well, who are simply masochistic enough to enjoy it. Rarer is the person being payed to be there, who has had trouble finding employment elsewhere. (It's the only job that pays minimum wage.)

It is common, at the end of a date, if one partner is not interested in pursuing the relationship further, for them to get up to use the restroom or something and simply not return, leaving their partner to pay the entire bill instead of just their half, which they almost always cannot pay and wind up working the stalls. There are a few people who get their kicks by taking someone out on a date with the pretense that they're rich, snuffing their server, ordering them whole, and sneaking out before the bill arrives, dooming their partner to be unable to leave that establishment for roughly half a year.

It's a bit uncomfortable, the piss gets sticky eventually, and staying in that shackled position 24/7 results in some cramping issues and such. They can often sleep at night when the place is closed, but if it's a place that's open 24 hours a day, they'll get woken up often and have trouble getting enough sleep.