This is the second installment of "The Experiment" series - it's recommended that you read the first chapter, "The Experiment Ch. 01," before you read this one, but it's not necessary.
All individuals involved in sexual activity are consenting adults 18 years old or older. All events and people within this story are fictional and created solely as a work of erotic entertainment.
*****
When she first came home from work that day, Jennifer was greeted by the sight of her son Chris in nothing but shorts. She could tell he wasn't hard just yet, but she could still make out the distinct bulge of his flaccid cock. Aside from that, she was still mesmerized by her son's tight, rippling muscles in action as he quickly moved around the kitchen, making dinner for her. His actions caused both her heart and pussy lips to swell in pride.
That's
my
son,
she thought proudly.
Mine.
Before she'd announce her arrival, she discreetly undid the top few buttons of her blouse, exposing her bounteous cleavage to his hungry eyes if he chose to look her way.
Normally, Jennifer wasn't this promiscuous - but teasing a younger man was something that had turned her on even before the serum was given to her: she remembered in her senior year of highschool, she was passing by a freshman in the hallway after school. She remembered wearing a trenchcoat and lingerie underneath because later on, she had a date with her boyfriend, Jason. As she passed the freshma, she turned to him, tapped his shoulder, and undid her coat, flashing him.
She remembered how horny the simple act had made her. The date with Jason had ended with with a two-hour session of sex. Even though he had wore a condom (at least that time), she still ended up pregnant with Chris.
She undid the last button she could before she was basically topless, thought about what she was going to say, and said it.
"No shirt, today?" she asked teasingly, her horny desires were in the driver's seat with the serum stomping on the gas. Her motherly side sat shotgun, non-committedly trying to reach for the wheel.
"No, it's a little too hot for that," Chris responded, not taking an eye off of his cooking.
"Good," she approved. "you look a lot better like this," she commented, biting her finger sexily.
This drew a reaction from him that greatly pleased her; his eyes were redirected to her cleavage as he blushed. They made eye-contact for a mere fraction of a second before his eyes were redirected to her breasts which had noticeably swollen since this morning, and like this morning, his erection popped back into existence. Like mother like son, Jennifer's eyes were redirected to her son's shorts.
But unlike this morning, Chris made no attempt to hide his hard member. Even through his shorts, she could swear that his cock had grown since breakfast. She could now see how much more defined its veins ridges had become through the thin material of his shorts. They both stared at each other's bodies for several seconds before she broke the silence.
"Perfect," she said approvingly, "you look the best like this," she said as she walked to the coatroom, weighing her breasts in her hands.
She took off her heels and walked up the stairs to her room, "I'm gonna go change," she threw over her shoulder as she sashayed up the stairs as her son watched from the kitchen, behind her. She swayed her hips tantalisingly for his gawking eyes.
He licked his lips as he watched his mother ascend while rubbing his massive phallus through his shorts.
After she disappeared, Chris realized in shock what had just happened: he just showed his own mother his erection, which she looked at, and complimented! His member swelled in pride at the compliment to a point at which is was becoming painful to keep his shorts on since he had noticeably grown since this morning. He quickly shed them, freeing his titanic erection which stood out like a third arm. He now had to stand over a foot away from the edge of the counter so that his cockhead didn't touch it. It was a little awkward at first, but he liked how it felt without wearing clothes. He continued moving around the kitchen, his dick slicing through the air in front of him as he set the table.
Suddenly, he heard his mother coming down the stairs. He looked down at his nude state and knew he had to make a choice: he could either put his shorts back on, or not. Thinking about his mom's words earlier about freeing up his cock, he hurriedly tucked his shorts under the small round table and tablecloth and sat his bare-butt on the on the leather chair with his cockhead almost touching the underside of the table.
He turned his neck to face the stairs and couldn't believe his eyes; his mom was descending the staircase also naked apart from a pair of turquoise, lace silk boyshorts and a smile. Her huge, natural and sagless boobs bounced as she stepped with each of her breasts being the size of her head, maybe even bigger. Her bright, pink nipples were as long as pinky fingers with only quarter-sized areolae that simply begged to be sucked - especially as they dribbled a small squirt of milk with each of her heavy footfalls that made the buck naked Chris go buck wild.
His cock jumped, hitting the underside of the table with a thud as precum oozed from his tip and onto the floor. Chris was only now realizing how much of a mess was caused by the experiment. Luckily, the tablecloth meant that she couldn't see any of this, for which Chris sent a silent prayer of thanks.
He managed to choke back his moans of pleasure as his giant dick continued to repeatedly nudge the underside of the table and spew precum onto the floor.
Meanwhile, his mother either didn't see his current situation or pretended not to. She then went to the kitchen to grab utensils, something Chris had forgotten when setting the table, along with a cup. As she did this, she exposed her bare back, and more importantly, her sweet behind that was only covered by a thin layer of silk leaving little to the imagination; with every step, her ass gave a sexy wobble that did nothing to help Chris's pre-orgasmic coma. With great self-control, he tore his eyes away from her body to regain his composure and to stop his dick's spewing.
On the other side of the kitchen, Chris's mother relished in the taboo element of the current situation.
Jennifer could feel herself hot all over as she pranced around the kitchen in front of her son in nothing but the silky shorts. Despite everything, being this close to being nude was very invigorating; with each step, her ass and boobs jiggled without restraint. Speaking of her boobs, Meiko was definitely right; the milk was certainly ready; she'd have to lactate after this as she leaked milk everywhere she walked.
She then went back to the table to sit down, gave a fork and a spoon to her son and looked at him with a smile. As their table wasn't that big, their knees nudged each others' as she sat opposite to him, catching his eyes on her chest.
"Yeah, you're not the only one who can suddenly decide to stop wearing clothes," she said, boldly thrusting out her chest.
"I noticed," he said with a grimace.
She quickly realized her son's discomfort. She knew exactly what effect her newly exposed curves were having on him, and she loved it. She readjusted the way she sat, with one of her feet down and one nestled against her crotch up on the seat.
"What's wrong, honey? Is everything okay?" she asked, knitting her eyebrows, feigning innocence.
He didn't respond immediately, and his breathing was slightly ragged.
He's probably
so
hard right now,
she thought. She licked her lips remembering how fat his member had looked earlier while he was wearing his shorts. The serum in her had her thinking about all the naughty places in her body she could use to house her son's incestuous hard-on as the mother in her tried to fight these thoughts away - but it was of no use.
She felt the heel of the foot against her crotch warm up as she started directing pornos starring her and her son's hard cock as she started grinding her almost-bare pussy against her heel, with nothing separating them other than a sheer piece of fabric she regretted putting on. She rocked back and forth in her seat patiently pleasing herself as she waited for her son to answer.
