Dr. Joshua smiled, “My thoughts exactly. All it means is that they are healthy and vibrant.”
One part of me was embarrassed that they were so openly discussing my accidental erections and Carla’s arousal during all the breastfeeding sessions. We had never talked about sex or anything remotely close. We’re a normal, everyday family. I guess that’s why the doctor seemed so interested.
But another part of me was sorry I missed out on watching Carla as she tried to get off on mom’s titties. If I had noticed at the time, I’d probably have cum instantaneously while breastfeeding from our mother.
Dr. Joshua contemplated everything. “How interesting that all of you were similarly affected in terms of your sex drive. It sounds like none of you had control over your urges.”
The three of us looked at each other. Instead of shame, we all seemed relieved by a shared excuse from the medical professional. At least we were in it together. And the idea that it had been ‘out of our control’ was highly convenient.
“Though we haven’t yet discussed this, I think we should move forward and explore this fascinating new development. It could be fun… errr… educational for your family.”
Mom slowly nodded. “I brought Roy and Carla here so they could learn. What did you have in mind?”
“Nobody is in the lab right now and I think it’s best if we finished today’s research over there. Alice, leave your top off. You’ll be getting naked soon.”
The look on mom’s face was priceless. I’m sure this was the first time she had ever been asked to walk topless around her workplace. She seemed even more dazed by the fact that the doctor wanted her to be completely naked. Just thinking about it made my cock stir in anticipation. At that point, I knew trouble was around the corner.
Looking at Carla, I knew she felt the same.
Daughter’s Perspective: The Breasts
Like most college graduates, Carla had some experience with sex. Over the last four years, she had three partners and most of her sexual trysts happened in a dorm room. Sex was no longer awkward for her, but she knew her limitations and that there was a lot to learn.
During their ‘sessions’ at home, mom would only expose her breasts and usually placed a towel on her lap to avoid a mess. Carla wasn’t sure why her arousal was so affected by feeding from her mother’s breast. But the effects were undeniable. Her lactating mom made her pussy wetter than any guy from her past.
Now, watching her mother’s current state in the lab caused an even more dramatic reaction between her legs. Sure, sucking on her mom’s tits always made her incredibly horny, but that was in the privacy of her own home (and later in her bedroom). Now, she was sopping wet from watching her topless mom parade through an empty research facility, while a physician watched!
Several lab stations occupied the large research facility. Carla was impressed with the way her mother proudly made her way through the laboratory, past the desks littered with bunsen burners and glass beakers. It was clinical, yet immensely sexual at the same time.
Over the years, there had been several times when she caught glimpses of mom in various states of undress. Typically, it was when mom had been in a rush and left her bedroom door ajar. Those instances had always been brief, but Carla couldn’t help notice that mom seemed pretty fit for a middle-aged woman.
However, this was a completely different situation. Mom was a test subject and Carla almost felt sorry for her. Despite mom’s stoic look, she must have been embarrassed. Any normal person would be.
Dr. Joshua led the way to the back of the room, where another exam table was located. This particular device was equipped with stirrups, like those found in ob-gyn offices. After covering the table with a clean sheet, the doctor asked mom to lay down and put her feet up.
As instructed, mom hopped up on the table and then laid back. The doctor prompted mom to lift her legs and place her heels in the stirrups, which were off to each side of the table. Mom finally did as she was asked, and as a result, her pussy was on full display for anyone to see.
“Roy, please stand over here,” the doctor said, gesturing towards a view typically reserved for a medical professional. “Do you like what you see? Be honest.”
Carla watched her brother squirm, looking at the pussy of their obviously embarrassed mom with her legs spread open because of the device. The doctor displayed genuine curiosity, but this seemed a bit over the top for normal research.
“Mom’s beautiful. I’ve always thought that.”
“Do you want to fuck her?”
Roy’s jaw dropped and mom had the same reaction. Nobody was prepared for the doctor to use that kind of language, let alone suggest sexual intercourse. It was shockingly unprofessional!
“I’d… I… if it’s necessary,” Roy stammered, clearly confused and conflicted.
The doctor nodded. “But it is. We know definitively that your mother’s sex drive has increased from this study drug. Now, it seems that you and your sister are experiencing the same reaction. It would help to document the extent to which you have been affected. So the question is; has the drug impacted your mother’s milk, or have you always been attracted to your mother?”
Roy wasn’t even looking at Dr. Joshua. His eyes were riveted on mom, as she lay on display. Like a man on the prowl, he gazed at the exposed pussy with lustful intent.
“I…I…” He could barely say the words.
“Don’t forget, we’re paying a lot of money for this research. You and your mother have an ethical obligation to fulfill the agreement she signed. Just remember, it’s for the good of society.”
He took a deep breath. “Maybe it’s both. I’ve always, you know, been attracted to her. And since I started sucking on her breasts… it’s all I could think about.”
“Do you want to fuck?”
“Yes, I do.”
The doctor smiled. “Well then, don’t tell me. Tell your mother.”
Turning to look mom in the eyes, Roy whispered, “Mom, I want to fuck you so badly.”
Mom didn’t look upset or nervous. Actually, she looked at him with understanding, as if she was experiencing the same level of deviant desire. At that moment, Carla knew their family was about to enter new territory.
“Go on, do it. Remember your obligations to this study.”
Hesitantly dropping his pants, Roy didn’t even bother to remove them completely, letting them pool at his ankles. He stepped forward and used both hands to caress mom’s crotch and thighs. Surprisingly – or not – mom didn’t resist.
Carla noticed Roy must have decided their mom was ready for action, because he lined his cock up with mom’s open pussy and lurched forward, impaling her roughly. Both mom and Roy groaned in unison when deep penetration had been achieved. They sounded relieved, yet anxious for more.
She had expected Roy to go easy on mom, since mom hadn’t dated in a while. But no… he pounded her pussy with vigor, as if mom was a seasoned porn star. It looked like he wasn’t holding back in the least. For better traction, he clenched mom’s ass and pulled her to him with every thrust.
Mom’s arms started above her head, but quickly grabbed onto the table for support and she encouraged Roy to keep fucking her pussy. Neither of them seemed to care that they were being closely observed.
Watching her younger brother — who always felt more like a twin — fuck their mother was startling. Carla tried to look away, but her mom’s groans, grunts and shouts of “Oh YES!” brought her attention back to the obscene display. She was particularly struck by the force of her brother’s lovemaking, causing mom’s big breasts to firmly rock back and forth.
“Carla, your assistance is needed,” Dr. Joshua said while taking notes.
She gulped, still looking on. “Me? I don’t think I’m needed. Roy is… ummm… has everything under control.”
“Your mother’s breasts are ripe. The poor woman needs to be drained, especially now that your talented brother is pushing her to the brink. Go, relieve her plump, swollen mammary glands. Don’t forget about your obligations.”
Looking down at her mom’s tits, Carla had never felt so torn. She wished she could blame her feelings on the study drug, but that would be a lie. Down deep, she knew the truth. She’d secretly been attracted to both her mother and brother long before this study began.
With every fiber of her being, Carla wanted to suckle on mom while her brother continued to ravage her pussy. And while she drained those tits, Carla planned to finger herself. The idea of them all climaxing together had her feeling weak in the knees.
As if in a trace, Carla approached her mother, drawn to jiggling breasts like a moth to flame. Finally, standing next to her mom, she extended her hand in an attempt to catch one of the fleshy globes as it bounced to and fro.
Her eyes roamed her mother’s naked body, which was starting to sweat profusely from the hot incestuous sex. Then their eyes locked when mom looked at her, attempting to speak in between grunts and moans.
“Ugh! Carla… Oh God!… It’s ok, sweetheart. OH! Follow your… heart. We’re under contract to… ohh… give honest results… go ahead, my love. Roy! Please don’t stop!!”
Unable to hold back any longer, Carla bent down and grabbed one of her mother’s sweaty tits. It was almost like an erotic game to capture the elusive nipple into her mouth, since mom’s boob was in a constant state of motion. She took her time getting it in, almost fearful of the sexual repercussion of taking things too far. After several seconds, Carla prevailed and latched on to the prize. A steady stream of milk immediately gushed into her mouth after the first suck.
Carla knew her panties were saturated, not just from watching her brother fuck their mom, but also from participating in this illicit and highly taboo act.
She felt mom’s body pulsating while her brother continued to fuck with abandon. Remarkably, Carla managed to nurse steadily, giving mom continuous relief. Carla undid her own pants and dove deep into her underwear, finding her target. Round and round, her fingers circled her clit while she became increasingly aroused.
It took Carla by surprise when her mom spoke again.
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