Welcome people to this world of hentai logic. Different from your world in many ways, all of your wildest, most perverted, dreams, desires, and perhaps even nightmares, are possible. Here males might have a cock or multiple cocks as large as houses, or have dicks for tongues and/or nipples. Females might have breasts big enough to have there own zip code, as well as having multiple breasts, vagina, they may even have a penis, or two.
All of this and more are possible without risk, or consequence. More you say? Well OK if that ain't enough then, not only are you a pervert, but your in luck. Having such large genitals wouldn't do much good if you couldn't fuck someone, and luckily you can. From birth the people of this world have elastic bodies that can fit a cock of any size, even one the size of a planet.
Still not enough? Well don't worry because there is still more, not only do you have all of this but you also have anthro's (furies), which follow all the same rules, and may ore may not (you decide) out number humans. On top of the anthro's are ordinary animals, whom are instinctively, great at sex, as well as constantly horny.
That still isn't enough?! Well now your perverted to the point of sickening, not that that matters to you. Well you'll be glade to know that, while all other forms of food still exist, that all life in this world can, not only survive but even, thrive on a diet of nothing but scat (i.e. shit, poop, etc.), urine (i.e. piss, pee, etc.), and/or cum (i.e. jizz, sperm, etc.)
Don't worry if even that isn't enough, because there may, or may not, be a few secrets here and there to discover. But if all of that is TOO much, then, again, don't worry. Just because that the world's physics and logic allow for this, doesn't mean that everyone in this world exploits it...in less you want them to. Maybe there are no differences in our society other then the obvious, or maybe its radically different, perhaps it is a sex crazed society of orgies, that eat nothing but poop, or maybe it is simply a little bit more open, somewhere between the first two.
You decide how the story goes from here.