Siblings/stepsiblings conduct an experiment

[Brandnewbuddy]

Had a taboo idea. I’ll post my specific idea below but the general premise is this: siblings or stepsiblings decide to experiment not because they are harboring secret lusts towards each other but rather because they wonder why they aren’t attracted to each other.

I figure adding a step sibling might be a way to be a catalyst.

 

[Brandnewbuddy]

My example: Guy’s stepsister comes home from college. He was best friends with her brother before their parents got married so he began seeing them as siblings pretty quick. Both of his stepsiblings have trouble picking up on cues and they’re very inquisitive.

So stepsister is talking about school with her siblings and she seems bothered by something: she says her roommate saw a picture of her brother and stepbrother and said “if they were my brothers I couldn’t keep my hands off of them.” And this confused Stepsis. Like, is it normal to think about siblings that way?

Stepbrother explains she was just making a joke but Stepsis and then bro start wondering: isn’t it odd they aren’t attracted to each other. Under other circumstances they would be each other’s type. And with how much porn there is regarding the subject, people must have that desire.

Stepbro objects but then Stepsis asks him point blank if he’s ever thought of her sexually, and she knows if he’s lying so he admits to a wet dream…but that doesn’t count…right?

So Stepsis proposes the three of them experiment. They’ll do some skinship to start, then some foreplay…and if they are vibing, then they’ll have sex.

Brother is in as he wants to see what would happen and stepbro can’t help but remember how he felt after the wet dream so he’s in.

I figured it would be an awkward yet intimate story which comes off as three people legitimately exploring and experimenting

 

[Carnevil9]

It sounds like it could be a very thoughtful, thought-provoking, and sensitive story. But it also sounds like it could provide enough red meat for the incest crowd to get a lot of fans. Go for it!

 

[Carnevil9]

My personal theory of the incest taboo is that it is an evolutionary trait: species that don't find incest "icky" are more likely to inbreed, and thus die out from recessive genetic flaws. Successful species are the ones that develop a lack of sexual attraction to those that they grow up with, thus are more likely to form favorable genetic unions with unrelated individuals.

 

[TheWritingGroup]

My personal theory of the incest taboo is that it is an evolutionary trait: species that don't find incest "icky" are more likely to inbreed, and thus die out from recessive genetic flaws. Successful species are the ones that develop a lack of sexual attraction to those that they grow up with, thus are more likely to form favorable genetic unions with unrelated individuals.

Lots of species have incest without dying out. There is at least one organism that has gone millions of years without outbreeding. A lion or stallion will unhesitatingly copulate with a daughter, aphid males (when they exist) will copulate with sisters, as will fig wasps ....

Mammals tend to have a mechanism to force outbreeding, but not necessarily in any one generation.

 

[dirk2024]

I figured it would be an awkward yet intimate story which comes off as three people legitimately exploring and experimenting

I like sibling/stepsibling stories as they have that relationship background based on love and respect. I have one published story so far, my first: https://www.literotica.com/s/a-masseur-is-born-ch-01 I have follow-ups in the planning stages.

For this one, I can see how the thought of "what if" would lead to experimentation. I like the idea of how the sister's friend got the ball rolling with her. The one brother being a step, would need explaining. And, they'd all need to be pretty friendly to one another before hand.

 

[Brandnewbuddy]

I like sibling/stepsibling stories as they have that relationship background based on love and respect. I have one published story so far, my first: https://www.literotica.com/s/a-masseur-is-born-ch-01 I have follow-ups in the planning stages.

For this one, I can see how the thought of "what if" would lead to experimentation. I like the idea of how the sister's friend got the ball rolling with her. The one brother being a step, would need explaining. And, they'd all need to be pretty friendly to one another before hand.

I was thinking of including one of them being a stepbrother to mess with expectations a bit as well as give an excuse for things to proceed.

Expectations:readers would think it’s a story about stepbro getting laid and siblings are along for the ride. He will fuck his Stepsis first as a way of gently easing in the incest…that is not what happens (more on that in a second)

Excuse: stepbro admitting to the wet dream gives sis an excuse to keep pressing the issue. If she just did her experiment with her bro, they probably would have stopped after their first skinship session didn’t do anything. But knowing stepbro at least entertained the idea wants Stepsis to push things forward.

I figure the way it would go is not one but three stories: with each character getting the POV, with each having a secret they aren’t telling the others.

The incident with the roommate did kick things off but each of them has another reason they are engaged with the experiment

Stepbro: secretly is bi and has a crush on his stepbro. Had it for a while but it’s only recently been sexual. He does become attracted to his Stepsis, but he’s not the first person to get hard from the experiment or it’s not her that gets him hard

Sis: sis is mostly telling the truth…but after roommate made the comment she thought about her two bros and it did nothing for her…but then she imagined two guys who looked like her brothers but then imagined them faceless…imagined two guys exploring her and letting her explore them and it got her turned on more than she had ever been.

Bro: his secret is that he’s kind of a little freak despite being young. He’s already experienced, he’s got an interest in a lot of kinks, but he’s terrified of being judged about it.

So each story is them becoming physically more intimate as well as more open about their secrets and why they kept them secret. Eventually culminating in them having a threeway and being closer than ever

 

[dirk2024]

Stepbro: secretly is bi and has a crush on his stepbro. Had it for a while but it’s only recently been sexual. He does become attracted to his Stepsis, but he’s not the first person to get hard from the experiment or it’s not her that gets him hard

I've noticed guy on guy doesn't go over well in the Taboo category. Woman on Woman...sure! Hypocritical? Certainly.