Siblings become too comfortable with sex

[FantasySharer1]

On an international trip, the siblings tell the parents they will be acting as a married couple the entire trip. While in Rome, Venice, and Florence, brother and sister are always kissing, touching one another, and enjoying each other's company and onlookers just think they are any other couple in love. Perhaps one of them is the child of the older couple that they are traveling with.

While visiting the Vatican, they slip into a side room and make love, coming out flushed and sweaty. Parents know exactly what they've done.

"This is a sacred place!" Mom scolds them.

"Mom, Adam and Eve's kids were siblings and they had to have mated with each other. If the story is true, sibling incest is where we are all came from. So me and my brother are just acting out our origin story!"

Dad laughs. "They're right."

Mom shakes her head. "Unbelievable!"

Brother says to sister: "Do you think that your pussy will be carrying the first brother-sister creampie into the Sistine Chapel?"

"Oh my God that's enough!" Mom says as they walk into the Sistine Chapel.

 

[Laodice]

March 2021

“Dear, we have a problem. When I was at the grocery store today I saw the twins sitting at the Java Hut next door, obviously ditching school.”

“Well honey … let's see. They're getting decent grades in school,. We don't really want them to become little brainless animatrons who do whatever the peons in charge tell them to do. It is not a crime. They made a decision. Let them stretch their wings a little. Be responsible and face the potential consequences of their actions.”

March 2022

“Honey, I found a six pack of empty beer bottles in the trash when I took it out this morning. I think the twins had more than just pizza when we were at the Opera last night.”

“Hey we were both 17 once. Mala prohibita ... Didn't you ever sneak a beer. I mean it was just one six pack, right? I'd rather that they were doing it here at the house than somewhere else and then driving home.”

March 2023

“Dear, I don't think you want to go into the house right now. “

“Why not?”

“They obviously didn’t expect us home so soon. Our daughter is lying naked on top of the kitchen island with her legs wrapped around her brother's neck. She has a hold of both of his ears while he is going down and going to town.”

 

[FantasySharer1]

Mom: Why are you walking like that?

Sis: Your son stretched me out this morning for an hour. I'm a little sore. And he must have not jacked off on his entire week-long trip because he came so much that I'm still dripping him into my underwear.

Mom: Oh my God, all the details, do you have to always tell me all the details?

Dad: Wait. You two don't use protection? Do you know how dangerous that is? We tolerate this because it's safer than you both fucking strangers and being careless and because we trust you won't hurt each other. But you need to be practicing safe sex. That's really dangerous. I thought we taught you better.

Sis: Daddy, Mike and I have never been with anyone else ever. There are no STDs that could possibly be a danger to us.

Dad: What about pregnancy?

Sis: You mean you want my brother to cum into a rubber balloon so we can throw it away. No way. That is my brother's cum. Your son's semen. It belongs inside a good woman who loves him and wants him. Who wants it to become a part of her. I never let it go to waste. We time my fertile periods and he pulls out as needed. You really want your progeny's seed just spilling out in the garbage. Aren't you glad I'm here to take care of your son Daddy?

Dad: That is so dangerous and disturbing but your brother must be so happy.

Sis: Oh he's happy Daddy. I make sure he never needs to masturbate ever. I made it clear his baby sister is always here to drain his balls. Even if I'm sleeping he has 100% permission to slip into me and use my as his fleshlight. You have no idea how safe I feel when I know that my lover is also my big brother who I know would never harm me. It just makes me want to give my whole body to him all the time.

Mom: I don't know how you learned to talk like this.

Dad: The talking is the problem for you?

Bro: (comes downstairs) hey guys

Mom: Good morning Michael. How did you sleep?

Bro: Hey Mom, not that well actually. I was busy reaming out your daughter's tight little pussy. We were both so horny we just couldn't really sleep more than an hour.

Mom: Ok thank you I'm going to work. Oh my God

Bro: Cmon Dad I know you and Mom were at it last night too. High five! Collins men for the win! We tear up that pussy!

Dad: (shaking head, but smiles and reluctantly high fives his son): You guys are ridiculous.

 

[FantasySharer1]

Mom: Aren't you going to workout today sweetie?

Daughter: No Mom, not today. It's leg day and my thighs are already so sore. You son gave it to me for two hours last night and I had to hold my thighs open and do all kinds of things with them. He really twisted me into a pretzel. There's no way I can work out.

Mom: Oh my God! Do you really have to tell me every detail?

Dad: She gets off on getting you frustrated you know.

Mom: It doesn't frustrate you?

Dad: They're good for each other. I know they're in good hands. I'd rather our son be with our little girl than some asshole.

Daughter: Thank God you get it. So much better to have your son and his thick cock reaming out your daughter's pipes than some jerk. Right Daddy?

Dad: Oh God, you don't have to push it.

Son (comes down stairs): Did I hear Dad say he wants me to clean out your pipes little sis? (embraces her from behind and kisses neck lovingly, playfully)

Mom: Here we go.

Son: Cmon honey, I got a study group tonight and I need some love before I pull the all-nighter.

Daughter: I'll be in your room in five minutes.

Mom: Jesus. At least try to keep it down.

Son: Never.

 

[FantasySharer1]

Parents go to a Hedonism-like open-sex and nudity allowed vacation.

Dad: It's so hot to be out here like this.

Mom: It is so nice. (she mounts him on a couch on the beach and they start to ride)

(crowd in distance: FILL HER UP! FILL HER UP!)

Dad: "What is that? It's coming from the pool level up from the beach?"

Mom: "Sounds like 'fill her up'! Wanna go see? We can finish our fun later!"

Dad: "Yeah let's go"

(they gather their things and go upstairs to the pool common area where in the middle of a naked crowd - they see a muscular man and a curvy, slender, sexy woman fucking with abandon. Her legs are on his shoulders as he plows deep into her without mercy)

Mom: "Oh my God, David."

Dad: "Are those....the kids?"

Mom: "It is. It's our fucking kids."

Dad: "Haha, literally fucking."

Mom: "It's not funny."

Dad: "It's pretty damn hot though. Look at them. They are really going at it. I forgot how beautiful they look when they have sex."

Mom: "This was supposed to be our vacation. They fuck in front of us at home whenever they want and they brought it here too."

Brother grunts loud as Sister screams his name and cums while Brother unleashes his thick, heavy load into his sister.

Dad: "I mean, if you look at them for a second without remembering they're they kids, they're honestly beautiful honey. That is some of the most powerful fucking I've ever seen. They know how to play each other's bodies like lifelong instruments."

Mom: (watching her kids embrace in post-orgasmic bliss as the crowd claps) "They don't even recognize the crowd, they're just lost in each other."

Dad: "Yeah."

Mom: "I think I need you to fuck me like that right now."

Dad: "Deal"

 

[sirhugs]

Please keep posts brief and save outlines for elsewhere

 

[DarkSollat]

How it would look during pandemic, where there is lockdown and everyone stay home? The siblings of course would spend more time on fucking, but they're young and adventurous, the bedroom is a little to little for them. So parents set some schedule, where the specific rooms are open for them - like they can have sex in the toilet at Thursday 10-12 only. But some mistakes were made and e.g. the open kitchen is available the same time as mother's favorite soap opera is on, and she has to watch it while their kids have sex nearby. Or the corridor is available for them at the same time mom and dad go to work, so they have to pass by the siblings several times.

And of course the siblings' favorite dirty talk is about them, being, well, siblings. So parents often listens to talk like "yeah, pound your sister's pussy!" or "worship your brother's cock", or "you're my little brother, how are your dick so big?"

 

[Rob_Royale]

I can't imagine the parents not getting pulled into this at some point making it a true family affair. Mom and dad have house free and they are wildly fucking in missionary when mom feels two mouths on her nipples.

 

[DarkSollat]

I can't imagine the parents not getting pulled into this at some point making it a true family affair. Mom and dad have house free and they are wildly fucking in missionary when mom feels two mouths on her nipples.

I think there was a topic or two about it

In this one I just love comedic effect of parents wanting to be cool but also seeing their kids' affair as a wrong thing.

 

[FantasySharer1]

I think there was a topic or two about it

In this one I just love comedic effect of parents wanting to be cool but also seeing their kids' affair as a wrong thing.

Would be funny if the Mom just finished mopping the kitchen and daughter walks into it unaware of that, completely naked, having JUST been fucked by her brother, and his cum drips out of her and all over the freshly mopped kitchen floor.