Serum 42 XXL Pt. 05Serum 42 XXL Pt. 05

Ass

All characters in sexual situations are 18 or older. Thanks for reading!

“How’s my favorite brother this fine morning?” Violet swung Jackson’s door open quickly and stepped inside. Was she hoping to catch him with his dick out? She wasn’t sure. That was a disturbing thought. She pulled at the sleeves of her white lab coat with trembling fingers. Being nervous around Jackson was very new to her.

“I’m your only brother, duffus.” Jackson looked over at his sister from his desk chair. He clicked on the mouse and paused his game. “Any luck with the counterwhatsit?” Despite the constant ache in his balls, he hoped she’d say no.

“Not yet.” Violet closed the door behind her and stepped into the room. “Oh, don’t look so sad, Jackie. We’ll figure this out.” She clasped her hands in front of her and fiddled with the beaker in her left hand. “So… um… about that. I need another sample.”

“Okay. Give it here.” Jackson held out his hand for the beaker and placed it on his desk when she handed it to him. “I’ll fap one out after I colonize the outer region in sector 13.”

“What?” Violet blinked her hazel eyes in confusion.

“In my space game, Vi.” Jackson looked back at his game. “Probably in an hour or so.” He un-paused the game and diverted resources into seed ships at the main space dock.

“Did you say fap?” When had her nerdy, eighteen-year-old brother gotten so cavalier about sex talk? He seemed so… confident.

“Yeah. My hands are fine now. So, I’ll take care of it myself. You’re off the hook. See ya.” He didn’t look up from the computer screen.

“Um… Jackie?” Violet rolled the toes on her left foot slowly on the floor. “Maybe… maybe I should help you again.”

Jackson paused the game and slowly looked over at his big sister. “You want to help?”

“Yes.” Violet cleared her throat and looked away. She couldn’t meet her brother’s gaze. “I just… I just think that… scientifically…” her eyes moved to his lap and the growing lump in his shorts. “… I should observe… um…”

“Well, screw sector 13 then.” A big smile spread on Jackson’s face. “Get over here.”

Violet stepped over to her brother and dropped to her knees.

~~

The tray in Lucy’s hand held three turkey sandwiches and a big glass of milk. She hummed as she climbed the stairs. Poor Jackson had been so hungry lately. Lucy hoped Violet reversed the serum soon. Her dress swished as she reached the top of the stairs and turned down the hall. She stopped outside Jackson’s room and put her ear up to the closed door. It sounded like he was watching porn again. She could hear a woman’s voice mewing and grunting. That poor boy couldn’t empty those weighty testicles enough.

Lucy put her hand on the doorknob, balanced the tray with her other hand, and paused. He wouldn’t mind if she had a little peek. She wanted to see which video her son had picked. There were lots of surprising developments in the Burton household recently. One of them was Lucy’s burgeoning interest in porn. She supposed she’d never had the opportunity before. She couldn’t very well watch with her husband, Delmore.

The door swung slowly and quietly open. Lucy peeked into the room and almost dropped the tray when she saw what was going on in there. Her skinny son sat in his desk chair facing the far window with his shorts around his legs. His impossibly long penis exposed and in his big sister’s right hand. Violet’s left hand was stuffed between her legs, but her lab coat obscured what she was doing with that hand. The way Violet’s mouth hung open, the grunting sounds she made, and the far-off look in her eyes let Lucy know exactly what her hidden left hand was up to.

When was the last time Lucy had taken a breath? She exhaled and then inhaled deeply. Her children didn’t notice her as she stood there peeking in. They were busy. Violet masturbated herself kocaeli escort and Jackson. Lucy’s brain tried to wrap itself around this insane act. She quietly closed the door and leaned against the wall, breathing very hard. It wasn’t just Lucy, it was Violet, too. What was happening in her once-quiet, suburban home?

Without thinking, Lucy walked quickly to her room. She put the tray of sandwiches on her dresser, closed and locked her door, and flopped onto the bed. Like lightning, her hand moved between her legs, pulled up her dress, and pulled her wet panties to the side. It was the most furious masturbation session the middle-aged wife had ever had.

~~

His sperm looked different. Violet blinked into her microscope. The difference was clear as day. The little guys swam faster than they should and they wiggled at a greater pace. Violet suddenly felt a little weak in the knees thinking about how much of her brother’s cum she’d already swallowed. This stuff was inside her.

What did the changes in sperm mean? Violet had her suspicions. Increased fertility was likely for sure. What else?

“How’s my eldest ragamuffin doing today?” Lucy entered Violet’s room to find her daughter staring into a microscope. “I thought I’d bring you some lemonade to help with your work. Citrus is good for concentration.” Lucy intended to keep the whole interaction chipper. Even after what she’d seen her children doing earlier that day.

“Hi, Mom.” Violet looked up and blinked. “Thanks. You can set it over there.”

“I didn’t just come up here to deliver lemonade, sweetie.” Lucy put down the lemonade next to some bubbling beakers. “I… well… I…” Lucy clasped her hands in front of her dress and took a deep breath. “I accidently saw you and Jackie today.”

“Saw us what?” Violet’s heart nearly stopped and she broke out in a cold sweat. She never should have initiated with her brother. He’d given her an out. But she’d just wanted to hold that penis one last time.

“This isn’t easy for a mother to say, Violet.” Lucy’s steady, blue eyes watched Violet’s hazel eyes dart about. “You were pleasuring him and yourself.”

“Oh, shit.” Violet leaned against the table. “I didn’t mean to. Ever since the accident. I just…”

“I’ve been having strange feelings around him, too.” Lucy wasn’t going to tell her daughter more than that. If that made her a hypocrite, so be it. “I think it’s your serum.”

“Well, yeah.” Violet nodded. “His body has changed and he’s more… um… assertive.” Violet looked down at the floor. “Maybe he’s also releasing some sort of scent, or something that attracts…” Violet wanted to steer the conversation away from her. “We should test him on a control subject. If I watch him interact with a control, I can probably narrow down his physiological changes. That would help me find the counter serum.”

“Control subject?”

“You know, Mom.” Violet nodded. Thinking about science helped block out some of her discomfort. “Bring in a woman that wouldn’t otherwise be interested in Jackie. We don’t want him to actually seduce the woman, we just want her to spend a little time with him and then we ask her some questions about how she was feeling while she interacted with him. We’ll need someone sure to shoot him down. Maybe one of your married friends?”

“I couldn’t ask one of my friends to do something like that.” Lucy frowned. This conversation wasn’t going the way she thought it would.

“We won’t tell her what the study is really about.” Violet smiled, working out the details of the experiment in her head. “We’d say Jackie’s working on some psychology project for school and then put them in a room together. We can set up a camera and watch the whole thing.”

“Well, okay. I guess.” Lucy’s frown deepened. “Maybe you and Jackie shouldn’t be alone together until we get this whole thing sorted.”

“Yeah, sure, kocaeli escort bayan Mom.” Violet grabbed a paper and pencil and started taking notes. “And maybe you shouldn’t be alone with him either.” Violet laughed. The ridiculousness of her straitlaced mother succumbing to her skinny brother tickled her.

“Well, I can’t do that. Obviously.” Lucy turned to go. “I’m his mother.”

~~

“Hello, young man.” Rose Perkins walked into the teenager’s room. She had boys of her own so she knew what to expect. Jackson’s room was less messy than her boys’ rooms. And it had an unusual pungent, earthy smell. But otherwise it was the same, with posters of scantily clad women and fantasy stuff. She took a deep breath and relaxed. The scent seemed like it would be off-putting at first, but as it lingered in her nose, she grew to like it.

“Hey, Mrs. Perkins.” Jackson stood and stepped over to her. Should he shake her hand? He wasn’t sure so he stood awkwardly for a moment. He then stuck out his hand, and she clasped his. He squeezed firmly and shook. He held on for longer than normal, but her soft skin felt so nice. He let go. The physical contact gave Jackson some confidence. He’d never felt confident around beautiful women before the accident.

“So…” Rose suddenly felt very flustered. Her cheeks grew hot and she brushed her black hair away from her shoulders. “Your mom tells me we’re here for a psychology experiment?” She busied her hands fiddling with her dress. She was taller than this eighteen-year-old boy, and she outweighed him. But for some reason, she felt intimidated.

“I guess so,” Jackson said. “I’m supposed to ask you some questions.”

~~

In Violet’s room, Violet and Lucy watched on the monitor. The camera had a wide angle, and they could see most of Jackson’s bedroom. Jackson and Rose stood talking.

“It all seems fine.” Lucy bent over to look closely.

“That handshake was weird, but otherwise, yeah.” Violet held a clipboard and made some notes. “Can you hear what they’re saying?” The voices sounded garbled. “I think I put the microphone too far away.”

“No.” Lucy shook her head. “But it looks like he’s going through the questions.”

Several minutes passed. Lucy watched Rose take a step back from her son and shake her head. “What’s she doing?”

“I think Jackie just asked her something off script and she said no.” Violet squinted at the monitor. She tried to read their lips. “Damn, I wish we had audio.” Her brother’s body language was so aggressive. He took a step toward Rose and the wife took another step back. They did this until her back went to the wall and he was only two steps in front of her.

“I don’t like this, Violet.” Lucy crossed her arms and tapped her foot with nervous energy. “We should put a stop to it.”

“Not yet.” Violet quickly scribbled notes. “The way they’re standing is outside the normative range for this sort of conversation. This is exactly what we wanted to see.”

“I can see it’s not normal. I…” Lucy put her hand to her mouth as she watched her son drop to his knees and crawl under Rose’s dress. She could see the lump of his head move under her dress between her legs and then fix itself in front of her vagina. “I… I… can’t believe it.” She stared with wide eyes as Rose threw her head back and put her hands on her dress, right on top of Jackson’s head. They could just make out Rose’s warbly moan.

“Mom?” Violet was unsure what to do. She looked over at her mother who breathed fast and looked red in the face.

“I don’t… understand.” Lucy watched the woman she thought she knew writhing up against the wall while Jackson pleasured her with his mouth. “She’s married. I mean… I mean… Delmore and I were just at her twentieth anniversary party.” Lucy witnessed her happily married friend shudder her way through an orgasm.

The Burton women couldn’t izmit escort take their eyes off the screen as Jackson reemerged from under Rose’s dress. He looked up at her and said something. She looked down, nodded, and pulled her dress over her head. She wore sensible, boring underwear that Jackson quickly removed. Jackson then removed his own clothes and the teenager and the wife stood facing each other. Rose staring at Jackson’s monstrous penis, and Jackson looking the pretty wife up and down.

“We really should put a stop to…” Violet’s eyes widened. “Oh no, what are they doing?” She watched her skinny brother, with his rigid dick swaying in front of him, guide Rose to the bed. Rose shook her head several times, but moved up onto the bed and let Jackson place her on her hands and knees. Her head dropped and her hair covered her face. “Is Jackson a virgin?”

“I thought so… but…” Lucy held her breath as her son climbed on the bed behind Rose and placed his penis at her entrance. He was obviously having a hard time finding her hole. “Oh, my.” Lucy watched as Rose reached back with her left hand and guided him in. Lucy could see the woman’s wedding ring sparkle on the monitor.

“How can she even take it?” Violet heard Rose’s scream over the speakers and through the wall as Jackson entered her.

Lucy shook her head in awe. This was like one of those porn videos Jackson liked so much. But better. Way, way better. Her son grabbed Rose’s hips and humped her with long, powerful strokes. If he was a virgin, he certainly was a fast learner. She couldn’t see his face well on the screen, but he looked like his expression was a mix of wonder and determination. The small muscles in his chest and arms flexed as he pulled her back on his penis over and over again. Rose’s wailing was quite audible through the video, and probably through the whole house. Jackson asked her a question and Rose looked back at him over her shoulder and shook her head.

“What should we do?” Violet didn’t even look over at Lucy when she asked the question. She couldn’t miss a second of watching her brother debauch poor Mrs. Perkins. Violet’s panties were soaked.

“I don’t know.” Lucy shook her head very slowly. She rubbed her legs together. Her panties practically dripped as she viewed the improbable things happening in her son’s room. She could tell Rose was working her way through another orgasm as the woman tossed her black hair back and forth. Lucy wondered if she was jealous of Rose. She decided she was.

A silence fell over the Burton women as they watched Jackson mate Rose for more than thirty minutes until he lost his rhythm and his mouth hung open.

“Wait. We shouldn’t let him cum in her.” Violet roused herself. “There’s something about his sperm.” She watched Jackson bellow and slam into Rose’s round ass with three final strokes and then hold himself balls deep, trembling. Rose screamed as she accepted his load. “Too late,” Violet whispered.

“We should have never done this experiment.” Lucy looked at her daughter with a furrowed brow. “Now that’s it’s over, we need to -“

“It’s not over.” Violet pointed at the screen. Jackson had flipped Rose onto her back and mounted her again. They could see her large breasts swaying with each violent thrust.

“Oh, my gosh.” Lucy wiped sweat from her forehead. This was all so crazy.

Violet and Lucy watched the teenager and wife copulate for more than another hour. When it was done, the women stayed in Violet’s room. They let Rose dress and leave the house without seeing them. That would give her some modicum of dignity. They hoped she didn’t realize there was a camera in the room.

After that, Lucy said a quick goodbye to her daughter and raced to the shower. She’d meant only to clean off the sweat and moisture between her legs, but she couldn’t resist rubbing herself to two major orgasms.

Alone in her room, Violet locked her door, stripped, and started the video over from the beginning. She furiously masturbated with one of her special toys while watching Rose Perkins fall to her brother all over again.

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