Free Use Universe/Premise

A world like our own, but retroactively altered to be much more open and sexual.

• STDs have never existed, and due to biological quirks, will never exist.
• Women have conscious control over pregnancy, obviating the need for any birth control. Menstruation doesn't exist.
• Humans start puberty earlier (5-7), and develop ravenous sex drives soon after.
• Bodies have perfect heat control, able to remain comfortable even while nude in a winter storm. As such, clothes are purely for style and sex.
• Similarly, body and pubic hair has no need to exist, so the most one will find is a light landing strip.
• Refactory periods as we know them do not exist. People are ready for sex the moment after they ejaculate, and are only limited by their exhaustion and hydration.
• Anal sex is as easy, clean and as pleasurable as vaginal sex, and enjoyed about as frequently as it.
• People don't have gag reflexes. They can trivially take very large cocks or dildos, but doing so will increase arousal.
• Humans of all sexes ejaculate much more, both in quantity and frequency. A penis will output at least nine times what it does in our world, and a vagina will have increases amounts of fluid output. Even when not fucking, genitals are always leaking precum or vaginal lubricant, ready for sex at a moment's notice.

As a result, humans societies since antiquity have evolved with sex as a communal, common, and public activity. In modern times, this resulted in the recognition of free and regular sexual activity as a human right, and the enshrinement of "free use" as a legal concept in every place on the planet. This provides that every person of any age is permitted to sexually utilize any free use individual, which is any person past puberty (barring prohibitive medical conditions).

It has several provisions: Note here that a starred (*) item means it applies to everyone, not just the consenting and free-to-use.

• Free dress* -- You may wear as much or little clothing as you wish, including full nudity.
• Free touch -- You may grope, fondle, or masturbate any consenting or free use person.
• Free sex -- You may have sex with any consenting or free use person.
• Free stripping -- You may strip any consenting or free use person's clothing off, either partially or fully.
• Free ejaculations* -- You may cum anywhere you wish. You don't need their consent to ejaculate on them or any of their possessions.
• Free photography* -- You may take pictures or videos of anyone in public, even if they're having sex or naked. If you profit from the media, they must be credited and given a majority of the revenue.

All of these clauses apply in public equally to in private. All of these clauses have "if it is safe" implicitly attached. (You can never be violent, or use someone if it'll cause them harm, or if it's an unsafe environment, such as a mine or factory)

But in effect this means people walking around in very revealing clothing or nude, and having sex in public. Everyone gets used to seeing and participating in lots of casual sex from a young age, parents, siblings, friends, strangers, classmates, teachers, coworkers, and more are all sex partners. Consequently everyone is bisexual, and nearly everyone is polyamorous (practices consensual non-monogamy). It's what everyone is used to, and people would have trouble imagining it any other way.

The "free ejaculations" clause is very commonly practiced all throughout society, semen and girl cum are an important part of a person's daily experience. After sex, you may cum in someone's hair, or on their body, or in their holes, or even all over their stuff. Everyone's clothes, walls, bedsheets, and possessions have been stained with cum from use over time. In fact, several stores offer clothes and products with fake cum stains already on them! Restaurants will provide dishes with semen added, or a stranger will provide their own all over your lunch while you're eating, and people will pay it no mind.

Since almost everyone is free use, and society is overtly sexual, the distinction between "SFW" and "NSFW" is completely absent. You'll have sex at work or school the same as any other place, you can post selfies naked or with a semen facial to public social media, porn sites don't exist, it's just a kind of video you post to YouTube like any other.

Technology has evolved like in our world, but without a desire to go to war, most instead has been channeled into the sexual. Advanced dildos, medication to increase ejaculate amount, and nearly-flawless surgery to add replacement (or additional!) penises, testicles, vaginas, etc.

Overall, society is sexual, open, and happy. After people's basic needs are met, the highest priority of society is pleasure.