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All sex acts in this story are with consenting adults 18 and over.
Uncontrollable Urges
Jen, my younger sister, is subject to frequent sexual manias that typically peak around midnight. Her symptoms include chronic masturbation, high-risk hookups, and deviant sexual behavior. Since we live in the middle of nowhere, I am her primary sexual outlet. And nothing quiesces her manias better than a run of consecutive orgasms that can go on for hours. But I'm not the only person servicing her uncontrollable urges. She is always on Tinder.
She has met strangers in parking lots, public parks, and back alleys. She likes the thrill of public sex and has been arrested twice for indecent exposure. But after a scary gang bang encounter in Spokane, she no longer leaves the house to satisfy her cravings. Instead, we host females and couples, preferably brothers and sisters.
It was just past midnight, and Jen and I were in the jacuzzi tub, facing each other, with her feet on my chest. We were smoking weed, giggling, and feeling no pain. Until I brought up our mother.
"She's not living with us," grumbled Jen. "She was never in our lives when we were growing up, and she's sure as shit not gonna start now."
Our mother, Rachel, is a Master Sergeant in the Army and currently stationed in Texas. We were raised by our father and had very little contact with her, other than once a year for a weekend. But she's retiring and wants to live with us.
"She'll pay rent."
"And she'll ruin our sex life."
"She can stay in the guest house. She won't know."
"The fuck she won't. She already thinks we're fucking."
"How do you know?"
"She told me that beautiful women should never live with their brothers." Mom is right about that. My sister's pretty face and athletic body will tempt any family member, especially out here in the middle of nowhere.
"What did you say?"
"I told her to mind her own business."
"That sounds too much like a confession."
"Fuck her. There's nothing wrong with us. We should just tell her the truth."
"She'll never talk to us again."
"Good."
"I'd like to have a mom for once in my life."
"Austin, you're not fooling anyone. I know you want to fuck her."
I would deny it, except that Jen knows me too well. She sat up, gliding her perky breasts along my stomach, then pressing her studded nipples into my chest. Her long tongue, stud and all, slipped across my lips and pressed against mine. After some very deep tongue kissing, Jen licked her way down my chest, along my stomach, until I felt the warmth and wetness of her mouth as it surrounded my crown. She teased my urethra with her tongue stud before licking up and down my shaft.
She loves to suck cock and focused her stud right on my frenulum. She tightened her mouth around my shaft, making it feel like a very snug vagina, and let me push my cock into the back of her throat. I roughly grabbed onto her hair, holding her head still, and pumped her mouth just like I fuck her pussy. I unloaded a gusher, and my sister collected it on her tongue. She slid back up my body and spit the cum all over my nipples.
"I love you," she whispered, before sucking the sperm off my nipples like she was breastfeeding. After lapping it all up and swallowing, she gripped my still-erect shaft and guided it into her oozing red warmth, driving all the way down on me as she started up her perverted dirty talk. Even though she doesn't like our mom, she's attracted to her body. And she loves to talk about incest while we're having incest.
"You just want inside her pussy, Austin."
"Why not, Jen? We can fuck her every night. And you can eat my cum out of her pussy."
The family sex talk hits hard with Jen, and she moaned and groaned as she drove down hard on me, making the water slosh out of the tub.
"I'll do it. I'll clean up her messy cunt and spit it in her mouth and make her eat it."
She drove her hot tongue into my mouth as she exploded in euphoric rapture. Her spasms were strong and lasted a minute before they finally subsided. The perverted demon that lives inside my sister was satiated. For about five minutes.
* * * *
The next day, we picked mom up at Spokane International Airport and were surprised by all her new Botox work. Her wrinkles were gone, and her lips were full and pouty. She dyed her hair black and was sporting a new tattoo on her left shoulder, a purple heart with her father's name across it.
It was a very cold reunion, with short hugs and forced smiles. After some insipid small talk, we finally got out of the airport and were driving south on the 195. That's when mom began her inquisition.
"Do you have a boyfriend, Jen?"
"No one in particular, mom."
"You're such a beautiful girl. You should move to the city. You'll be fighting off all the rich guys."
"I hate the city."
"How about you, Austin? You seeing someone?"
"I haven't found anyone I like."
"Well, when I move in, I'm going to get you settled down."
Jen quickly rebuked mom's self-invitation. "No one said you could move in."
"Why is that a problem, Jen? Are you hiding something from me?"
"Just come out and say it, mom. Say it to our faces."
"I'm not fucking blind, Jen. You're a couple. That's why you don't want me here."
"We don't want you here because we don't like you."
From that point on, not one word was spoken by any of us until we got home. Jen went straight upstairs to her bedroom, and I escorted mom to the guest house. I unlocked the door and deposited her suitcase in the entryway.
"Well, I got work to do. There are fresh towels in your bathroom. I'll be in the greenhouse, so text me if you need anything."
"Austin, are you having sex with your sister?"
"Don't be ridiculous, mom. And you better drop the subject, otherwise Jen is going to kick you out of here."
* * * *
"Austin, come on, I'm going crazy."
Mom stayed in the guesthouse all evening, which was good, as Jen was having another mania, and needed my cock. But I didn't feel comfortable, as mom has the code to our house and walks in whenever she wants.
"Mom is still awake."
"Who gives a shit? She can watch for all I care."
Jen quickly lost her skimpy t-shirt and workout shorts, pushed me down on the bed, and jumped on top of me, giggling as she pulled off my clothes. The savage was loose, and she kissed me so hard that my lips were burning. When Jen's eyes get that lusty evil gleam, the sex always gets out of control.
"Get me pregnant tonight."
"Jen, calm down."
"I can't. I need to get pregnant. Come on, let's get in the shower."
When Jen is like this, she needs to break barriers. And getting pregnant by her brother is definitely a barrier. I've cum in her pussy a thousand times with no protection, and she hasn't gotten pregnant yet. So, one of us has a fertility problem. But her pregnancy fetish is so intense that she practices deep vaginal stretching and will even drink my urine as she thinks it reduces her immune response to my sperm.
I got off the bed and followed her into her shower, where she keeps her favorite oversized sex toys. One has a bulbous head thicker than the barrel of a baseball bat, designed to stretch her vagina at the cervix. It doesn't look like it will fit, but when she's going crazy, she will force it inside and really slam down hard on it.
"Are you doing your ass too?"
"Just my pussy. Can you pee?"
"I'm ready." My job was easy. We get in the shower, and she licks and fingers my asshole to stimulate my semen production while she squats down and humps the monster sex toy until she orgasms. And she insists that the golden shower makes her cum harder.
The toy has a suction cup on the bottom, and she fastened it securely to the tile floor. She squatted down and went through the arduous process of getting it inside her. She sounded like she was trying to deadlift three hundred pounds, but once again, I was shocked at how deep it went inside her.
"Doesn't that hurt?"
"It's a process, bro. Come on, let's get your sperm going. Turn around."
I leaned into the shower wall and felt her hands on my butt cheeks. She pulled them apart, and I felt her tongue stud on my anus. While her stud doesn't do much for blow jobs, it makes a huge difference for her analingus. Between her magic tongue and two-fingered prostate massage, I was really having trouble focusing on urination. I turned my head to witness the unbelievable flexibility of her vagina. That toy is a foot long, and most of it disappeared into her cunt when she pushed all the way down on it.
"Oh fuck," she gasped, after pulling her fingers out of my ass. She doesn't even need to touch her clit, the simple act of abnormally stretching her pussy makes her cum hard.
"I'm cumming!"
I turned, pointed my cock at her breasts, and let it go. She drove down hard on the massive toy and took my peeing cock into her mouth. And she didn't spill a drop. She swallowed as her orgasm rumbled all through her body. Drinking pee is something she will do to anyone, especially when she's crazy like this. I turned on the shower and washed her off, then we went to her bed where she spread her legs and exposed her gaping pink gash to me.
"Jen, you're really stretched wide. It looks like you damaged your cunt."
"It's wide open, big brother. Now you can get me pregnant."
She has such fierce eyes when she's this horny, like she's possessed. I got into position, my cockhead just an inch from her freakishly gaped hole that looked like a blooming red rose. I slid it into her and felt nothing until I rubbed the underbelly of my cock against her lower pussy wall. She's never been this loose. She wrapped her legs around me and pressed her lips so hard against mine that our teeth clattered together. And I shot so much cum into her guts that she's going to be leaking for a week.
"I'm cumming."
"Shoot that baby shit inside me!"
We kissed wildly, tongues tangling until she lost all control and bit down hard on my lower lip.
"Ow, Jen, fuck!"
"Don't be a bitch, you love it and you know it. Come on, pull out, I wanna check your cum."
I got off, fell on my back, and Jen put two fingers inside her pussy and moved them around. It sounded like she was splashing through a puddle. She pulled her fingers out and put them in her mouth.
"Fuck, Austin, that was a load."
"Yeah, it was. I feel like you just stole my life force."
"Don't die on me yet, bro. I need your fist tonight."
"Aren't you sore?"
"I cum harder when it's sore."
* * * *
It was another crazy night, as Jen had well over a dozen orgasms before she got the evil out of her system and could fall asleep. And she can sleep all day. But I can't. I woke up at ten and checked my phone. There was a text from mom.
"I NEED TO TALK TO YOU. NOW."
