Chapter 01
"Jimmy! Stop!" Julie Smith,18, giggled as she playfully pushed on her twin brother's chest.
He had her pinned against her old Volkswagen Microbus with her short skirt around her waist and his hands cupping her bare ass.
"Come on, Sis! Just a little kiss!"
"You want more than a kiss, Mister!"
She ducked under his arms and tried to slip past him to the kitchen door. Her twin brother, Jimmy, grabbed her around the waist and pulled her to him, cupped her breasts, and ground his hard cock into her slim behind.
"No, I don't," he lied, "you leave for college in the morning! I just want one last kiss!"
Julie turned in his arms and wrapped her arms around his neck. She moistened her lips while looking up at him doe-eyed.
"So, you're not going to fuck me before I go?"
Jimmy grasped the hem of her halter top and pulled it up over her breasts. They popped out, small, pert, her pink pebble size nipples erect. He leaned down and took one in his mouth. Julie moaned as she pressed his head to her bosom.
Jimmy lightly nibbled on her sensitive nubs, causing her to squeal and push him away. Playfully she smacked him in the chest.
"Stop! You know what that does to me!"
He wiped the saliva from his mouth with the palm of his hand.
"We can't fuck tonight. Caitlin is sleeping over so you guys can get an early start in the morning."
Julie sighed. "Yes! Her mother called our mother, and they agreed she should spend the night here!"
Jimmy took her small 34B breasts in one hand and stroked them gently.
"So, no sex tonight! That is unless you can convince Caitlin to do a threesome."
Julie and Jimmy were Irish twins. They were born in the same year but ten months apart. Julie was the oldest. Because of the school admission policy, Jimmy was one grade year behind her.
The negligible age difference did nothing to cool their ardor for each other. In the past year, the siblings took each other's virginity and began exploring the mysteries of incestuous sex. The Internet and the Kama Sutra were their teachers.
Julie wrapped her arms around her brother's waist and lay her head on his chest.
"I've been working on her, but she is scared. It took weeks for her to let me suck on her humongous jugs. So, no sex, and I'll miss it! It'll be Thanksgiving before we see each other again."
"Jimmy! Julie! Have you finished loading the van yet?"
Jennifer 'Jenny' Smith pushed open the door connecting the kitchen and the garage. She craned her neck, trying to peer over the top and around the sides of the old Volkswagen bus. She wore tight jean shorts and an equally tight t-shirt.
Julie quickly stepped away from Jimmy, pulling her halter top and skirt down. She perfunctorily patted her hair in place and stepped around the van.
"Yes, Momma! Just about! I can't finish until Caitlin gets here with her stuff."
"She and her mother are on the way! Jimmy! Are you back there?"
Jimmy tried to rearrange his hard cock, so it would not be so obvious. He stepped around the van behind his sister, devilishly squeezing her ass.
"Yes, momma!"
Julie kept a straight face as she slapped at her brother's hand from her behind. The previous six months were a time of scorching, risky trysts, enhanced by the heart-stopping fear of being caught. Though she was yet unfamiliar with the term, she and her brother were exhibitionists.
"When you finish helping Julie, I could use a hand getting some old boxes out of the attic."
"Okay! I'll be a minute!"
Jimmy almost drooled as he watched his mother reenter the kitchen. First, there was the pronounced cameltoe of her skintight shorts and her perpetually hard nipples. Then the soft roll of her big ass as she walked back into the kitchen.
Julie punched her brother hard on the shoulder.
"OUCH! Why did you do that?"
"Because you're ogling our mother again! "
"Why does she dress like that lately? I mean, it's like she wants to put it all on display!"
Julie placed her fists on her slim hips and shook her head.
Men would never understand, she thought.
"That's for you, Dum Dum!"
"Me? Why the heck would mom dress like that for me?"
"You men are SO slow sometimes! Mom turns 40 next month. She's at that age where she starts to question her attractiveness."
"Question her attractiveness? She has always been sexy. The way she dresses now borders on the slutty! Kind of like you!"
Jimmy raised his hands in mock defense, anticipating a punch from Julie. It did not come.
"I dress like that to tease you! So does Momma! Look, dad is near 50. You and I have noticed the silence from their bedroom lately. They are having little or no sex. She dresses like that to get a reaction from dad., to reaffirm her sexuality!"
"Like me, she has noticed you eyeing her. Now she fantasizes about fucking you!"
"Mom wants to fuck me?" Jimmy's cock jumped.
"I don't think she wants to fuck you! It's a fantasy brought on by her fear of losing her sexual lure to men."
Julie stopped talking and got a faraway look in her eye. A broad smile split her face.
"What?"
Jimmy watched his sister's expression with some apprehension. That look usually meant she had thought of or planned a devilish action like when she had him do her doggie in the men's room between classes at school.
"I think she would! I think Momma would fuck you! Oh my god!"
Like any 18-year-old boy, Jimmy had sexual fantasies about his mother. He had gone the usual route. He tried to catch her undressed, stole her soiled panties for masturbation, and the other things a boy in puberty with an oedipal fixation do. Hormones rushed through him like a river at flood stage. Most of those fantasies faded when he and Julie began having sex.
"You're crazy, Sis!"
"No! No, I'm not! Listen, she used to wear mid-calf cotton nightgowns and robes. Now it's sheer peignoir sets. Instead of those god awful baggy ratty sweatpants and sweatshirts, she wears skintight shorts, t-shirts, and halter tops."
Jimmy shrugged. "I noticed! How could I not notice? But that's for dad!"
Julie punched his arm. "I've seen you ogling her! I have also seen dad not notice her. She knows you fancy her. She dresses to keep your interest and, hopefully, arouse dad's interest also!"