Questions tagged [sex]

For questions relating to sexual reproduction and the physical acts of mating that sexual beings engage in.

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34
votes
16answers
8k views

I have a superpower that no-one can say “no” to me. How can I get informed consent?

I have a character who has a super power that gives them what can be best described as perfect pheromones, and when in their presence, anyone will volunteer for anything they want. (Eg in existing ...
2
votes
3answers
100 views

Wings going from locomotive purposes in juveniles to sexual purposes in adults, plausible?

So I thought about how my dragon-like species would get it's wings between the arms and legs and I figured that this would be the evolutionary path for such a creature: Hexapodal ancestor -> ...
4
votes
1answer
65 views

Linking genetic sex to a set of climate adaptations

My world is fairly chaotic, with the same 2/3 of it being completely broken up and remade in chunks such that the whole 2/3 is always completely different than it was ten years ago. So once species ...
7
votes
5answers
294 views

What would cause vampires to become aroused when feeding?

I know that vampire bites could be very...erotic in most fictions, mostly due to proximity and intimate nature; more so with a human partner and it's heavily empathised but I'm wanting to understand ...
2
votes
5answers
198 views

What would happen to transgender culture/identity if sex were trivially chanageable? [closed]

This is a specific followup to the question 'How would society be different in a world where sex/gender is trivially changable?': in a future (Human, earth) society where (like in the Culture novels), ...
12
votes
4answers
580 views

How would dragons mate, according to science?

No, this is not not about courtship displays or dominance figths. (even thought I know that that is also part of mating) This is more of "What their genitalia would look like" and how they would "do ...
2
votes
5answers
528 views

Would Simultaneously Hermaphroditic Humans Still be “Men” and “Women”?

When looking exclusively at the muscular and skeletal systems of male and female humans, on average, we'd find what scientists call "sexual dimorphism". Even their voices are sexually dimorphic--...
10
votes
5answers
3k views

Could a unicorn species have the horn as its male genital?

I want to make my unicorns use the horn as their male genital. Is it biologically possible to put the genital on their head? I know there are many strange genital locations for animals, for example, ...
3
votes
4answers
1k views

is it biologically possible for a creature that can be compatible to reproduce with any creature?

just as the title, my question is can it possible for a creature that can reproduce with any/all creature despite it was different species/family? (not the alien xenomorph or parasite one/way but real ...
4
votes
3answers
335 views

Is there a reason that females passing on more than 1/2 of their genetics to the child would be unlikely to evolve?

On the earth today most animals use a two sex mating system where male and female provide the same amount of genetics to the resulting offspring, despite the fact that in many cases the female ...
20
votes
23answers
7k views

How can I identify potential mates (sex organs) without gender?

On this planet there is a species similar to humans with two sexes having differing reproductive organs. The concept of gender is non-existent on this planet. I'm not writing this for any political ...
7
votes
4answers
342 views

How can sex lead to a boost in performance for competitive sports for men?

Many believe that sex before a competition can have a negative impact on performance in combat, speed and strength sports in males. Athletes from strength and speed sports showed decreased performance ...
6
votes
6answers
568 views

Is plausible to have subspecies with & without separate sexes?

I'm creating humanoid specie with two subspecies Hairy races - roughly based on humans, chiss, mirialans, with standard males & females sexes Tentacle races- roughly based on asari, twilek, ...
7
votes
7answers
271 views

Would intelligence affect the evolution of colorful display patters for attracting mates?

On another planet there is a group of organisms that have colorful display patterns allowing them to attract mates. Eventually a branch of this type of organism evolves the intelligence of early ...
8
votes
6answers
5k views

Would humanity go extinct if pleasure ceases?

In the near future, the human population is overcrowded and food and water becomes scarce. Every preventative measure failed to address this issue and the world falls into a turmoil and panic is ...
7
votes
14answers
1k views

Can a genderless race have sex?

In my world, I created a race that doens't reproduce sexually. They have offspring through the combination of their blood, just blood, from a wound, and a special natural place that must be found in ...
-2
votes
5answers
680 views

Slaves and used in the sexual profession? [closed]

I ask this question. In a world that was destroyed due to a great catastrophe. A new world order has emerged and the people are governed by a council of 12. This new world order allows slavery to ...
9
votes
4answers
628 views

Why would an entire biosphere evolve to reproduce with three parents instead of two?

So I have an alien biosphere in which trisexual reproduction predominates. As far as we can tell, trisexual reproduction does not offer an advantage when it comes to shuffling genes. The biological ...
-4
votes
6answers
380 views

Why might humans and aliens be able to produce viable offspring? [closed]

Jeff is a human. He has two arms, two legs, a head, a heart, and all the normal stuff of a human. This includes a penis. Zhsdfgl is not a human. Zhsdfgl is roughly her species' equivalent of female. ...
0
votes
11answers
547 views

Representing lust in asexual beings?

How could demons of lust affect/tempt beings that do not reproduce sexually, and have no sexual desire? Like, they can't even be affected by lust magic, their brains simply aren't wired for it. How ...
7
votes
4answers
339 views

Sexual pleasure in anemophile reproducing humanoids

This species of humanoids has a peculiar way of reproducing. Instead of the usual physical intercourse between a male and a female, followed by the sperm cell merging with the egg cell to generate ...
5
votes
6answers
490 views

Reproductive Neck Darts

Yay my second alien sex question, I hope I am not arrested. Context Okay now to nitty gritty, So I got an intelligent species of Ostrich/flamingo looking creatures(this refers only to the shape, very ...
6
votes
5answers
1k views

Bonobo-LIke Social Structure

Bonobos tend to solve disagreements through sex instead of violence, what might have caused this to evolve, or something similar to evolve in a sapient race of humanoids?
1
vote
7answers
372 views

What would be the ideal deterrent to stop people selling sex? [closed]

Historians have often speculated that prostitution has existed since the beginning of civilisation. It is thousands of years old. In a future where prostitution is a thing of the past, and preferably ...
1
vote
5answers
1k views

Synthesis of Organic Life by a Machine

Given eggs and sperm, and the means to preserve them for centuries, could an artificially intelligent machine possibly produce its own "children", so to speak? Assume it has everything it and its ...
2
votes
3answers
420 views

How is natality affected if sex isn't pleasurable anymore?

Worldwide, every single person stopped enjoying sex. They still get attracted sexually but sex is basically frustrating and feels like it's always uncompleted. Nobody has orgasm but still ejaculate ...
1
vote
3answers
1k views

What Would Be Needed To Produce Human Hermaphrodites?

What kind of mutations would be necessary to cause humans to start producing fertile hermaphrodites?
-1
votes
1answer
188 views

Should gender be revealed early for a healthy child? [closed]

My Keplerians are externally gender neutral for 5 years. Now genetic testing will reveal gender but they don't do routine genetic testing. Obviously if a young Keplerian goes to the doctor due to ...
0
votes
1answer
317 views

Shorter refractory period? [closed]

What could cause a humanoid race, or even a group of humans, to develop a shorter sexual refractory period (that is, the males can have sex again more quickly after an orgasm)?
-2
votes
2answers
195 views

Increasing the Rate of Multiple Births in Humanoids? [duplicate]

What factors would cause a humanoid race (like, say, goblins, just to throw an example out there) to have a significantly higher rate of multiple births than the human norm? Presumably a large ...
1
vote
3answers
142 views

Primitive Fertility Treatments?

We're all aware of modern-day fertility treatments, like artificial insemination and hormones, but are there less advanced ways to trigger ovulation and/or otherwise boost fertility? What methods ...
3
votes
3answers
1k views

Mating ritual where female chases male?

Mating rituals are various behaviours, serving as a precursor to copulation in almost all animal species. In general these serve to aid the females of the species to pick out a mate. They can be ...
8
votes
10answers
3k views

Is a single sex species feasible?

I’ve seen a lot of questions on here about the possibility of more than two sexes but I’ve found nothing on the possibility of only a single sex. The closest thing I’ve found is isogamy, is there any ...
2
votes
6answers
1k views

Country where men are better looking then women [closed]

For storytelling purposes I need an plausible explanation why men are considered more beautiful than women in a country in the world I am building. So far in every country I have visited in my life ...
1
vote
3answers
368 views

What would cause an alien species on an alien world to behave in a (specifically) repugnant way?

One of my projects has been developed around the idea that humans in the future visit an earthlike planet in Andromeda. The planet is populated with humanoid creatures that are “well endowed.” Ex: the ...
14
votes
12answers
4k views

Post apocalypse contraception

In a post-industrial collapse scenario, what would be the most effective methods for contraception? Situation is a small scale civilisation with limited access to industrial materials and tooling but ...
-5
votes
4answers
481 views

What could cause sex roles to be reversed? [closed]

I'd like to get an idea for what could be the reasons that women were the ones who actively look most on the beginning for sex (meaning that just by physical appearance they'd get aroused enough to ...
3
votes
4answers
488 views

How could an organism chemically need sex?

Although (as far as I've seen, I haven't done in-depth research) the original/older version(s) of the succubus legend just have them as demons who seduce you, more modern interpretations seem to make ...
1
vote
5answers
730 views

Starting Sex Ratio - Generation Ship

Aliens have abducted 10,000 people and placed them on a generation ship, a really big one, for the purpose of seeding the stars with our species, which is nice of them. What ratio of men to women ...
3
votes
2answers
642 views

How could a creature/species evolve erogenous zones in areas not usually sex-related?

For example, a half-cat half-human hybrid might have a zone partway down their tail, or a human might have one in an unusual place e.g. their scalp, shoulders, whatever. I've seen this used in ...
-10
votes
2answers
511 views

The nynphomaniac disease [duplicate]

John is a bright scientist fired from the big corporation ¨ X-santo labs ¨. John creates a virus to get revenge for being fired. The virus name is ¨Nymph-01¨ When this virus infects a host via ...
4
votes
3answers
407 views

When traveling to an alternate Earth, how many generations would you have to breed with the natives to prevent inbreeding?

A group of 35 superhumans from the future get trapped on the alternative Earth still in the Dark Ages. Banding together they take control of a small country and establish themselves up as kings and ...
-4
votes
1answer
693 views

The sexy zombie outbreak [closed]

Tomorrow hordes of zombies will invade the streets around the world caused by an airborne fungus. The disease is incurable and the symptoms are similar to rabies. These zombies try to infect and ...
0
votes
1answer
133 views

Child custody in world where 3 partners required for reproduction [closed]

Imagine a world with intelligent beings [intelligence equal to human beings]. In general things are like here on Earth, except there are 3 partners required for reproduction [e.g. one sex with the ...
3
votes
4answers
499 views

I am an immortal warlord - how do I spread my DNA all over the world? [closed]

I am the emperor Haghonon the great; my kingdom is unmatched at war thanks to our giant wolves. I have all supplies that I need to take over the world, but that goal is simple for my army. My real ...
21
votes
5answers
4k views

Marriage and divorce in the future [closed]

In the future, if medical technology is significantly advanced and humans live indefinitely, or at least for human lifespans have increased by tens or hundreds of years, how will marriage/divorce/...
-3
votes
5answers
770 views

How would a lunar cycle of 18-19 days affect women's menstrual cycle?

Imagine an Earth-like planet with a moon that is closer to the planet than ours with a lunar cycle of 18-19 days. I am trying to imagine how this different cycle would affect human beings and animals. ...
7
votes
2answers
381 views

Will this creature's reproductive strategy work?

I am designing an alien species of organism (not necessarily intelligent, in fact, probably not). My current settings are these: The female is very large (bigger than cattle, smaller than elephants), ...
1
vote
5answers
614 views

Society where sexual feelings are synched up

I am thinking about sci-fi/fantasy society in which sexual feelings between the individuals have a natural way of getting synced up. It can be achieved through pheromones, or magical link (it does not ...
-2
votes
3answers
4k views

Sex with centaurs can be considered bestiality? [closed]

Lets say centaurs were created by proto-humans that had sex with zebras in ancient Africa. They lived in migrating herds but now they are integrated in human kingdoms. However some humans wanted to ...