Questions tagged [sex]

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

Filter by
Sorted by
Tagged with
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 ...
6
votes
4answers
249 views

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

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
443 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
238 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 ...
8
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 ...
-1
votes
5answers
476 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
538 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
307 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. ...
1
vote
11answers
405 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
276 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
444 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, ...
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?
0
votes
7answers
335 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
375 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
846 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
175 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
218 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
163 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
126 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
681 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
2k 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
312 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
11answers
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
302 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
405 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
574 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
494 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 ...
-9
votes
2answers
414 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
345 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
607 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
123 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
399 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 ...
20
votes
5answers
3k 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
705 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
337 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
561 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
3k 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 ...
-1
votes
3answers
610 views

Societal effects of succubi invasion? [closed]

A year from now an ancient cult opens a portal to another reality with the hope that demons invade the earth, but instead they summon 2 billion playful succubi. They are harmless when in a good mood, ...
-1
votes
3answers
338 views

Could sexual abstinence destroy our society? [closed]

Lets say 50% of human males or females decided to reject human sexual relationships and avoided reproducing. I'm very interested about this set-up in our modern world, could the MGTOW movement or ...
7
votes
5answers
2k views

A World without Sexual Desire

I'm developing a story about a world which is as similar to our world as possible, except for one important difference: sex doesn't exist. Romantic love still exists, it's just that there's no lust ...
7
votes
2answers
274 views

How would gender roles play out in an oviparous, sentient race?

Assume we have a sentient race that is both non-dimorphic insofar as males and females have no non-cosmetic secondary sexual traits, simply different reproductive organs and perhaps different cosmetic ...
-5
votes
8answers
840 views

What cultural movement(s) could cause pedophilia to be normalized in the west?

Note: This is a touchy subject even for a fantasy-theory site. It's probably best that I say that this question stems from an conversation I had with a coworker the other day (we're software engineers)...
3
votes
2answers
308 views

How to explain fire-breathing feathery dragon extreme mating behavior?

I'm going to borrow many ideas from birds to keep my dragon airborne, porous bones and feathers to keep it light while spewing balls of flame to create warm air currents at high altitudes. The problem ...
3
votes
3answers
483 views

How does a female-to-male adaptor impregnate?

A hypothetical species reproduces by females impregnating males a la seahorses. However, their reproductive system appears woefully ill-suited to this task. Their genitalia are outwardly similar to ...
12
votes
5answers
4k views

Diddling an alien, is it even possible? [closed]

A while ago a question was asked about the benefits of having sex with an alien and while it brought up some excellent points, there was a problem I had found. That question had made the assumption of ...
10
votes
4answers
740 views

Greatest possible genetic difference between a male and female of the same species?

Nature does some pretty interesting things with gender: This is a female trilobite beetle. Scientists have observed females extensively, yet for decades, scientists could not identify the male ...
-4
votes
1answer
395 views

To what extent would the world change if penis sizes of every single male became publicly known to everyone? [closed]

Extracted from here To what extent would the world change if penis sizes of every single male on earth became publicly known to everyone? Penis sizes of world leaders, celebrities, sports stars, ...