This will make more sense if you read the earlier parts. Don't worry, they're fun, action packed, and build the tension. Read them first! Also, all characters are 18 years or older. Enjoy.
*****
Mallory Stevens lay in her nice, king-sized bed, naked under the sheets. Next to her, her husband snored softly. They had made love earlier that night and Mallory was in shock by how unsatisfying it'd been. They'd always had a robust sex life, but tonight, while her husband moved fervently inside her, she'd felt something different. Emptiness. Bob sported a good six inches, but he'd felt like almost nothing. Had her vagina been stretched beyond repair by that teenager? Sam had roughly taken her at the office, and the feelings she felt with that scrawny boy deep inside her belly had eclipsed anything she'd felt with Bob or anyone else. But Mallory had expected things to return to normal. They hadn't.
"Bob?" Mallory whispered.
Her husband snored on.
What was happening to her?
Assured that her husband slept soundly, Mallory's left hand snaked down between her legs. She was wet. Her fingers stroked along her vaginal lips, feeling the soft little hairs. With a grunt, she shoved two fingers inside. For several minutes, she frigged herself.
It wasn't working.
Mallory snuck out of bed and tiptoed through her darkened house. In the refrigerator downstairs, rested a large cucumber that Bob had picked up at the grocery store earlier that day. Mallory needed it. She needed something to fill the empty void inside her vagina.
Stairs creaked as she moved toward the kitchen. She thought of Bob, innocently buying something for their salad. She imagined the clerk at the store ringing it up. She thought of herself unpacking the groceries. Everyone that had handled that once-virtuous vegetable had no idea that it would soon be buried deep inside Mallory's vagina.
With a flood of light, Mallory opened the fridge. She found the substitute penis. Maybe it wasn't quite as big as that teenage penis, but it would have to do. She fished it out of the bin and hurried toward the bathroom. In her rush, she left the refrigerator door hanging open behind her.
If this satisfied her itch, she might be able to get Sam out of her mind.
~~
Several weeks passed for Sam. He raced home after school every weekday so that he could soak his mom and Mrs. Singh in cum. Sam was particularly pleased he'd been able to get them to do stuff together. Watching his mom's head thrash as their petite married neighbor lapped at her pussy was an amazing high. Not long ago, Joyce would never have conceived of such an act, but now she thrust her hips, driving her pussy into Lakshmi's eager mouth. It was the same brazen lust that she showed for her son's dick. A spectacular sight.
During that time, Mallory Stevens kept herself at a wide distance. Sam was sure she'd come to him on her own. But she didn't. Sam even stopped by his dad's work, but Mallory hid well enough that Sam couldn't find her.
Sam spent the odd night with Bex, learning more about sex. He particularly liked the idea of scissoring. Something about holding on to that one leg gave him terrific leverage to ram his dick home. Bex was a fan because it allowed her to rub her clit on his top leg. When he tried it with Joyce, she went wild.
Of course, Bex kept pestering him about letting her watch him defile an older woman.
Eventually, on a Wednesday night in the early autumn, Sam gave in to his sister's requests and put a plan in motion.
~~
"In the closet?" Bex eyed Sam's closet with a long dubious look. She could see no bare carpet through the mass of dirty clothes on the floor. It smelled ripe. She was sure some of his cum-soaked towels lay hidden in there.
Disgust. She should have felt disgust. This was her gross little brother, after all. That's not, however, how her body responded. She pressed her pajama clad legs together as her pussy started leaking in her panties.
"What's wrong?" Sam cocked his head at her.
"It's just ..." Bex took a long breath in and then slowly let it out. Her narrow shoulders relaxed a bit. "Isn't it a bit cliched."
"You're the one that wanted this." Sam squirmed in his sweat pants. He hard dick was tucked under the elastic band of his pants, but the band wasn't quite strong enough to hold it in place. "Get in and leave the door open a crack. I promise you'll get a show."
"Fine." Bex pouted her lips at Sam and stepped into the closet. Her panties were now soaked through and it was only a matter of time until a stain started to spread on the front of her flannel pajama pants. She closed the door almost all the way. "And Sam?"
"Yeah?" Sam looked in at her. The only light came in from the waning moon outside his window. He could just barely make out the smooth curve of her cheek and her round blue eye peeking out.
"Thanks for doing this." Bex's right hand absentmindedly made its way toward her pussy. "This is going to be so hot."
"We'll see how you like it." Sam turned and headed for his bedroom door. "I'll go get her. Wait here and be quiet."
"Okay," Bex squeaked. Her hand had found her pussy. God this was hot. She couldn't wait to see Sam destroy their married neighbor's pussy.
About five minutes later she heard footsteps. Bex bent down and picked up a random piece of clothing. She wiped the pussy juice from her right hand onto whatever it was and threw it back to the floor. There was some satisfaction in adding her own bodily fluids to the mess of the closet. She placed her hands up on the wall and leaned forward. She couldn't masturbate while this was happening. Some accidental noise might give her away.
Bex peered out into the soft silver-lit room. In walked Sam, followed by a feminine form. But something was wrong. This woman was taller than Sam. She had a full, well-rounded figure. Her white skin almost glowed in the murky room. Bex stared hard at the woman.
Shit, it was their mom. She'd somehow found out what Sam was up to. Bad news was about to go down. Bex held her breath as she waited for Joyce to let Sam have it for having sex under her roof. With her married friend, no less. But there was no yelling. Not even any stern chiding.
"I'm still really sleepy, Sammy." Joyce wore an old t-shirt and panties. She rubbed at her right eye with the back of her right hand.
"Please, mom?" Sam shifted weight from foot to foot. "I know you don't like to it with dad home, but I've got a test tomorrow. And I can't sleep."
Bex scratched her head. What the hell was happening?
Joyce sighed and fell to her knees. The round lower curve of her ass caught the dim light perfectly as it emerged from her white panties. Bex gazed at her mother's voluptuous female form with some jealously. What was Joyce doing?
