Harold and Denise went on their honeymoon. Sam returned home and the boys went off to camp. Marilyn and Paul had the house to themselves for the first time in their marriage.
It was strange, but fun. They ate when and where they wanted. One day they had dinner in bed and once they had breakfast naked in the kitchen. Paul was a new man without his sister and sons around. Marilyn finally realized that he felt inhibited when the rest of the family were there.
She stopped nagging him about sex and things got better. They experimented and Paul admitted he'd been selfish. She vowed to herself never to foal around with her step-sons again. She'd done no cheating outside of the family, so it would be easy to remain faithful to Paul. Certainly now that Harold and Denise were married, Harold wouldn't come on to her anymore. He was so crazy about Denise, he couldn't keep his hands off her.
The day before the newlyweds were due to return home, Marilyn and Paul had a wonderful fuck. Paul admitted he wouldn't mind a little swinging and Marilyn happily agreed. Swinging! The very thought sent shivers down her spine.
When Denise and Harold arrived Marilyn had a lovely dinner all ready and Paul opened a bottle of wine. The newly married couple held hands during the meal and hardly touched the food. Denise's eyes blazed when she gazed at her husband and Marilyn felt a pang of something like envy. Paul's fucking had improved, but he'd never be the cocksman Harold was.
"It's nice to be home," Denise beamed at her brother and sister-in-law.
Harold put his hand on her thigh and the blonde giggled. Marilyn's heart lurched. Watching Harold stroke Denise's flesh made her pussy lubricate.
The next few hours were a blur. One minute Marilyn was serving desert and the next minute Paul was announcing he wanted an orgy.
Marilyn spilled her coffee in her lap and Denise helped her strip it off and went upstairs and brought her a robe.
The two couples went up to the master bedroom and Marilyn allowed them to position her at the head of the bed. She wore a silk robe and bra and panties. When Harold pulled her arms behind her back and tied her wrists together with his tie, she protested.
"What are you guys up to?" she said.
They all three snickered. "You'll find out," Paul said.
"Are you in on this?" she said, and he smiled mysteriously.
Harold climbed onto the bed and began squeezing her tits. "Take this thing off," he said, pushing her robe off her shoulders.
"Are you boys going to rape me?" she said.
"Rape? Rape?" Denise giggled. "Did anyone say rape?"
Harold's fingers felt lovely caressing her boobs. Marilyn glanced at Paul to see his reaction. He seemed to be turned on by her plight. Incredibly, he was rubbing his cock through his pants.
She sighed and closed her eyes as Harold fondled her boobs. He yanked her bra off and toyed with her nipples. Having her eyes closed made it all the more erotic. Especially because at one point Denise took over and began licking her tits.
They took turns. And then they all three played with her. She had six hands stroking and massaging and caressing her jugs. She had a mouth on one rubbery nipple and another on her thighs.
Paul crouched between her legs and pulled her panties off. He ran a series of kisses on her inner thighs and blew his warm breath over her snatch.
"Am I going to be the star all evening?" she said.
"Hell, no, we're all gonna take turns," Harold said.
"You don't think you're the only one who's going to get all this lovely attention, do you?" Denise snorted.
The blonde lay on her side next to Marilyn and nibbled on her right tit. Marilyn tousled her hair. "You'll never change," Marilyn said.
"But why should I, darling?" Denise said. "Keep sucking," Marilyn said, pushing Denise's mouth back down on her boob.
Suddenly the blonde sat back on her haunches and pulled her sweater over her head. "Look at me," she said to the others.
Marilyn gazed at her. Denise shook her shoulders, causing her tits to bounce around. "They've grown, haven't they?" she giggled.
"I'm sure I don't know," Paul said, his face reddening.
"Oh, sure!" Harold chuckled.
Paul and Denise exchanged glances and in that moment Marilyn knew that Paul was fucking his sister. What a family! She thought with a giggle. Not that I have any right to talk. But, really!
Denise toyed with her tits while she watched her husband and brother play with Marilyn. Marilyn had to admit Denise's boobs looked bigger. Could they have grown in just a few days of intensive fucking?
When Denise had fully erected her nipples, she stretched out on her back and peeled her panties off. She held her legs wide open and exposed the lush forest between her thighs.
Harold watched his wife as he licked Marilyn's tits. "Aren't you glad I dropped in that day?" he said.
"Sure am," she said as he tongued her nipple.
"You really are happy, aren't you?" Harold said.
"Paul is the best thing that ever happened to me," she said.
Harold bit her nipples and Marilyn noticed Paul watching. He had a tiny smile on his face and he was naked. His cock thrust up from his ball-bag and he masturbated while he watched Harold suck Marilyn's boobs.
Marilyn whimpered with excitement. Denise finger-fucked herself, but she moved back to Marilyn's side and licked her tits while she frigged forcefully.
When Harold stripped his clothes off, he knelt in front of Marilyn made her lick the drop of jizz on the tip of his cockhead. Having her wrists tied behind her, back made everything very exciting. She felt helpless, but the feeling was an incredible turn-on. She still couldn't believe that Paul was taking part in this orgy.
Harold moved closer to her. His balls tickled her chin. He pulled back, and his hairy nuts swayed as he wiggled his hips. He rolled his eyes and clutched his cock.
"Big Daddy," he chuckled.
Denise giggled and thrust two fingers into her gash. "Yeah, Big Daddy!"
"Big Daddy make you happy," he said to Marilyn, smacking his lips as he pumped his cock.
He pointed his cock at Marilyn and made a lewd motion with his lips. "Here's to my two women," he said. "Here's to Paul. The man who made it all possible."
"Way to go," Paul grinned. "Mama wants a suck," Denise pouted. Marilyn's wrists ached. "Is someone going to untie me?" she said.
Paul rolled over and untied her wrists. "I'll bet you can't believe I consented to this?" he said.
"Actually, I'm amazed," she said. "When Harold approached me with the idea, my first reaction was to tell him to get the hell out of my house. But when I thought about it and decided it could be the answer to things."
"Oh, darling," Marilyn said. "I think we're going to be okay."
They embraced and Paul stroked her slit. "How does it feel to be on display?" he said.
"I think I'm going to love it," she said.
"Things are going to heat up around here," he said.
Marilyn lowered her eyes. "Whatever you say, honey."
Paul licked her boobs while they watched Denise suck Harold's cock.
"Did you like being tied up?" Paul said.
"Yes."
"Will you tie me up sometime?" Paul said.
"Sure, if you want me to."
"You know what I'd like to do?"
"What, darling?"
"I'd like to give it to you in the back door," he said with a shy smile.
"Why, darling, that's absolutely perverse!" she giggled.
"Does that mean you're interested?"
"You bet."
Denise sucked Harold's prick all the way in to her mouth. Paul slid a finger into Marilyn's cunt and nibbled on her tits while they watched the blonde blow her husband.
Harold and Denise broke apart and joined the other couple. Harold frigged Denise while he watched Paul finger Marilyn.
"Isn't this wonderful?" Denise said.
"Sis," Paul said. "You're the greatest."
Denise blew him a kiss and lay down on her back with her legs widespread. She played with her pussy and motioned to Paul. "Get over here and suck my cunt," she said.
Paul shrugged his shoulders. "What can I do?" he said to Marilyn. "She's my sister."
He bent over and rubbed his face back and forth over her beaver. Denise moaned loudly and grabbed his head. "Spit on me and lick it off," she said and Marilyn watched with fascination as Paul spit an her muff and then licked it up with long swipes of his tongue.
"Dick me!" Denise cried.
"Mmmmmm," her brother mumbled. "I'm licking you."
"Stick your cock inside me and dick me!"
"Sis, shut up," Paul said calmly, tonguing her raw gash.
Marilyn giggled and clapped her hands.
Paul was finally growing up. He wasn't taking orders from his sister anymore. She turned to Harold. "Did you hear that?"
"Yeah, I tamed her, okay."
"Bless you," Marilyn said.
"My pleasure."
"Let's fuck," she said.
"Again, my pleasure."
He fingered her cunt and hefted her right tit in his fist. He stroked two fingers into her cunthole and caressed her cunt. She held his hand firmly against her.
"Keep that up and I'll explode."
"Want to?"
"I'd rather come when you're inside me."
Denise and Paul were fucking now. Denise was on top and she was bouncing up and down on Paul's dick. Her tits flew in the air and her blonde curls cascaded down her back. Marilyn thought she'd never seen her sister-in-law look prettier.
Paul rolled over and Denise landed on her back. Now Paul pistoned his cock in and out of his sister's cunt. The sight of her husband fucking his sister was the most exciting thing Marilyn ever witnessed.
Denise's pussy clutched Paul's dick. Paul stroked a few more times and then shot a load of whitish come into her gash. Marilyn pumped her cunt at Harold's finger as she watched the wanton scene.
He licked her tits while he fingered her. Denise rolled over and began kissing Marilyn. Harold crouched between Marilyn's legs and licked her pussy while Denise french-kissed her.
"Isn't this wonderful?" Denise said.
"Yes!"
"I'm never going to fuck the boys again."
"Ssshhh!" Marilyn hissed.
"What was that?" Harold said.
"Nothing!" Marilyn said.
Marilyn trembled when Denise ran the tip of her tongue over her boobs. Harold plunged his tongue into her gash. For a moment Paul left the room and Marilyn wondered what he was doing.
"He's taking a leak," Harold said.
"Oh, well, I miss him," Marilyn said.
"You like when he watches, huh?"
"Sure. Denise. Don't mention the boys again," Marilyn said.
Harold licked her clit and held her cuntflaps open with his thumbs. "Now this is what I call cunt," he said.
"I'm coming!" Marilyn cried.
When she opened her eyes, Paul was back on the bed. Denise bit down hard on her nipple. She sadistically pinched the stiffened bud and winked.
"You know damn well you won't be able to resist fucking the boys," the blonde said.
"How about you?" Marilyn said.
"I'll do whatever I damn well please," Denise said in a nasty voice. "It's not incest if I go to bed with them. I'm only their aunt."
"And I'm only their step-mother," Marilyn said.
Denise lay down next to Marilyn and kissed her earlobe. "Watch it honey, or I'll tell Paul."
Marilyn knew then that Denise was still crazy. Nothing changed that fact. "You just do that," Marilyn cooed in the blonde's ear. "If it turns you on, be my guest."
Denise shoved one of her long nipples into Marilyn's mouth. "Suck," she snapped. Suddenly she pulled away. "Where's a man." Her long blonde hair framed her face wildly. "I want a man!"
"Quiet, Denise," Harold said. "You just got fucked. Don't be so damn selfish."
He continued licking Marilyn's cunt and Denise looked frantically at Paul. "Paul, honey, play with me."
"I'm bushed," Paul said.
Denise piled her hair on top of her head and rolled her eyes. "I'll scream if someone doesn't fuck me!" she said.
"Oh, shit, lay down," Paul said.
Denise lay flat on her back and Paul crouched between her legs. He lashed his tongue over her cunt and the blonde went crazy. "Are you hard yet?" she said.
"Hard enough," Paul said, straddling her and forcing his half-hard cock into her cunt.
Denise pulled her knees back to her tits and sighed. "Fuckie, fuckie!" she sang.
Paul stroked slowly, his eyes on Harold and Marilyn all the while. "Fuck her in the asshole," he said to Harold.
"Oh, yeah!" Harold said. He slapped Marilyn's butt and the brunette rolled onto her hand and knees.
Harold wet his prick with her cuntjuice and wedged his cockhead in her bung. It hurt at the moment of penetration, but once his shaft was inside her the pain disappeared.
"Honey, are you watching?" she said to Paul.
"You bet. What a fucking sight."
He stopped fucking Denise and lay on his side and watched. Harold plowed in and out of Marilyn's bowels. After a half dozen thrusts, he pulled out and motioned to Marilyn to turn over.
"Lick it clean little girl," he said and Marilyn opened her mouth and accepted his shit-streaked cock in her mouth.
"Perverts!" Denise cried. "Disgusting perverts!"
Harold clapped his hands and once again Marilyn rolled onto her hands and knees. Now he gored her asshole with his fuckpole and Paul stroked her tits.
"Here's to the best little wife and mother in the world," Paul said.
"She's a slut!" Denise yelled.
"Shut up," Paul said.
Denise wrapped her arms around her brother's neck and rubbed her tits against his back. "I love you!" she said.
"What about Harold?" Paul said.
"I love him too," Denise giggled.
Marilyn smiled. She squeezed Paul's hand as her orgasm overwhelmed her. Her sister-in-law was a little strange, but she had a good heart. And at least her marriage was secure. There was a lot to be grateful for.