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You are here: Home / Adult sex stories / Dirty Mom, Dirty Sis

Dirty Mom, Dirty Sis

James_SteeleJames_Steele January 7, 2019 Leave a Comment

Over the next few days, the fog over Elaine’s mind refused to lift. The little problem she had with her pussy getting wet when was close to her son only became worse. Now, she knew what he looked like grinding his cock between the legs of a loving girl, and he was magnificent. There was no way she’d ever forget the stunning sight of her slender son and curvy daughter fucking in perfect synchronicity. She was masturbating at every opportunity, fingering herself to desperate orgasms at least three or four times every day as she craved feeling that beautiful cock in her own pussy.

As if that weren’t bad enough, she’d found herself alone and close to Dani a few times, and discovered her pussy suddenly heating up and getting wet next to her daughter, too. Elaine had played with other females a few times, but she didn’t consider herself actively bisexual. It was just something that was nice to enjoy if it happened by chance. And even though she had a keen appreciation of her daughter’s curvy sensuality, it wasn’t like she was suddenly lusting for the girl. It was the way Dani became what her mother wished she could be for her son, the perfect fuck partner.

Elaine also envied what her daughter had found that she herself never had, a loving soulmate who also happened to be the perfect fuck partner. It was like something out of a dirty romance story, except the hero and heroine were brother and sister. Theirs was not a love story for mass consumption.

Meanwhile, the siblings’ mother found herself having to change panties several times every day. She could barely look either of her kids in the eye and knew they could tell mom was deeply distracted. She didn’t know, though, if Matt and Dani realized they were acting more secretive than usual. Or did it only seem that way because Elaine was being more vigilant now?

The mother’s job as a real estate agent allowed her a flexible schedule, but she still didn’t know how she made it to Friday without getting fired. Every meeting she sat through just went by in blur. She had to show houses to prospective buyers a few times and couldn’t get through it without imagining her kids fucking in every room of the house.

Dinner that Friday evening was a silent affair, and when they were finished, Matt helped his mother wash the dishes while Dani went upstairs. There was so much she wanted to say to him but she could barely make herself keep up with the usual small talk. It was hard to have a conversation when your pussy was on fire and dripping into your panties, yet she wanted both Matt and Dani to know their mother was aware of their relationship.

After they finished the dishes, Matt gave his mother a tight hug and told her how good dinner was.

“Thank you, baby,” she said absently, hugging him back while her mind played back the sight of his cock driving into his sister’s cunt.

“So, uh, the usual Friday family movie night?”

“Sure, Sweetie. That sounds nice.”

“Are you okay, Mom? You don’t seem quite like yourself.”

“Oh, I’m fine. It’s just, uh, I dunno, busy at work, I guess.”

“Mom, you always work too hard. Promise me you’ll take the whole weekend off, no going online for work, and just hang with me and Dani all weekend. Nothing but family.”

The “nothing but family” struck a chord with his mother. She did her best to smile at him but her clit was throbbing madly.

“I’d love nothing more,” she managed to say, wondering if he caught the look of need in his mother’s eyes.

“Awesome,” he said with a grin.

They held onto the hug longer than normal, and Matt’s hands strayed to the base of his mother’s spine, hovering just above the swell of her ass. Elaine’s pussy was aching until she was almost dizzy. She let her hands drift low on her son’s back and actually chanced resting her hands right on top of his ass cheeks. Her heart pounded wildly as she waited to see his reaction. His smile only grew bigger.

“Wouldn’t you rather be out on a Friday night with some hot girl?” she asked, testing him.

“No, Mom. Why would I want that when you and Dani are the most beautiful girls I know.”

“Oh, Sweetie,” she sighed, more wistfully than she meant to.

Matt let his hand brush over his mother’s ass. “We’ll have the best night right here at home. Nothing but family,” he said again.

“That sounds … special,” Elaine sighed.

“You and Dani are special,” he whispered with his lips touching her ear.

By the time he let her go and left the room, Elaine’s panties were sodden with dew. She was dying to finger her throbbing clit, but both kids were upstairs now and she didn’t think she’d have any privacy. She heard them taking turns in the bathroom and went upstairs herself to change for their family night at home.

In her room, Elaine undressed, put on a fresh pair of panties and then an oversized, men’s Oxford shirt that she liked for sleeping. It showed off her legs and hips, and tonight, after her kitchen encounter with Matt, she left the front unbuttoned low enough to let more than her usual amount of creamy cleavage to show. She went downstairs and waited for the kids to join her for a movie.

Dani had some of her brother’s worn out T shirts she liked using for nightgowns, and tonight she put on a threadbare white one along with a pair of black panties. Her brother wore briefs and a T shirt that didn’t go past his hip bones.

Elaine took her seat on the couch while Matt sat beside her and Dani sat on his other side opposite her mother. Their mother noticed Dani cuddling up comfortably with her brother. It wasn’t that unusual, but now it seemed like every look and gesture took on a new meaning. Elaine looked at Matt curiously, letting him know she noticed how intimate he and his sister were. He just smiled, and with his right arm around his sister, he shifted and put his left around his mother.

Elaine had to admit it felt good to be held by her son. Her pussy had the same overreaction she’d been feeling lately, but she leaned into the warmth of Matt’s body and gave in to the feeling. Dani had her eyes toward the TV while she clicked the remote in search of something to watch, but Elaine kept glancing toward the bulge in Matt’s briefs. His sister’s free hand was resting on his leg within a couple inches of his crotch. Their mother was sure Dani would have her hand right on top of her brother’s bulge if the two were alone.

“Oh, this looks good,” Dani said, settling on a love story that came with a warning of a lot of sex scenes.

“Sure, looks good,” Elaine agreed, wondering what watching a movie with that much sex along with her son and daughter would be like. But after watching the two of them not only have sex, but hot sex, it seemed like watching a sexy movie wasn’t anything to think twice about. On the other hand, watching anything with sex involved while snuggled up to her son felt dangerously exciting. Elaine let her hand move onto Matt’s leg right at the same level where his sister was touching the other side.

The bulge in Matt’s briefs looked like it was getting bigger. Elaine chanced a look, taking note of the way his cock was right between his sister’s and mother’s hands. She looked up and saw that Dani had caught her looking. The younger girl blushed but also smiled, then turned her face back toward the TV.

The movie took less than ten minutes before the first nude scene came on. The lead actress was blonde and extremely busty and the lead actor was eagerly feeling her tits, twisting her nipples while they kissed passionately.

“Ohhh, she’s got really big boobs,” Dani giggled. “I know you’re enjoying the show, Matty.”

“It’s, uh, interesting,” her brother said coyly.

Dani snickered. “You always think boobs are ‘interesting’.”

Elaine noticed her daughter was now lightly rubbing her brother’s upper thigh, nearly brushing the growing bulge of his cock through his briefs. Dani’s teasing was obviously making her brother’s meat swell more than before.

Matt chuckled at his sister’s bawdy joke, but he didn’t disagree with her. “What can I say? I’m a guy. We’re kinda hardwired to like boobs.”

This even made Elaine giggle along with her daughter. But then they watched the scene together. The only sound in the room were the moans of the characters in the movie.

“She looks kinda like Mom, don’t you think?” Dani asked a minute later.

“A little, I guess,” Matt replied.

“Sure, she does. Hot looking blonde. Killer body with huge tits. That’s just like Mom.”

“Dani!” Elaine called out in surprise. “That’s not how most girls talk about their mothers. Especially with their brother in the room.”

Dani giggled the same way she always had when she’d done something naughty. Elaine also noticed her daughter was now rubbing her brother’s cock through his underwear. His shaft was quickly growing longer and thicker and stretching out his briefs. Elaine’s nipples were hard as pebbles and her pussy spasmed with a rush of heat.

“Yeah, but it’s true. And Matty thinks so too. Just ask him.”

Elaine then looked questioningly at her son. Matt was already beginning to look a little glassy-eyed from the way his sister was brazenly rubbing his fully aroused cock right in front of their mother. But he managed a guilty smile.

“She’s right, Mom. I do think you’re hot. And you’ve got amazing tits. I look at them way more than you know. If anything, I think you’re much hotter than the girl in the movie.”

Elaine was caught speechless. Dani looked pleased with herself as she proudly massaged her brother’s cock.

“Mom, you should unbutton your shirt the rest of the way and let us really see your boobs. You’re not covering much anyway,” Dani said.

Elaine blushed. The girl was right. She’d left her shirt undone on purpose so Matt could see as much of her tits as she dared allow. But now her daughter was saying she should just let her melons out in the open. And with the sexual moaning and groaning that was coming from the movie, not to mention the way Dani was groping her brother’s hard dick, her suggestion actually made sense.

Elaine took an obvious look at Dani’s hand on Matt’s cock. Then she looked up at her son.

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