Human Trials [MF][Drug Enhanced Libido]

The label reads “Sample XVX-9001”.
I kiss the bottle gently in disbelief. This tiny spray bottle may look like a sample of perfume, but it marks the culmination of more than 7 years of my life.
I’d started on it with the mindset of a 22 year old. What if I could make a sex drug? (An idea from a horny college guy to be sure) But not just for treating dysfunction. For enhancement of the libido. For enhancing the physical body.
I’d played around with it in the lab for a few semesters and before I knew it, I’d written my Master’s thesis on it: Dual Application of Pheromone Triggers and Gene Therapy as Promoters of Human Sexual Desire.
It got me into a PhD program, and by then I was committed. I’d finally completed preliminary trials and submitted my research as a major part of my dissertation. And it was done.
A knock at the door pulls me out of my thoughts.
“Dr. Kimball?”
“Mark, glad I caught you in the lab. I was worried you’d cut out early on a Friday. Do you have sec?”
I glanced at my watch. I was due home for my anniversary dinner in less than an hour, but as a PhD candidate, it was hard not to have time for the dean of the medical college. I slip the vial into the pocket of my lab coat.
“Sure, what can I do for you?”
Dean Kimball pulls a stool out from under the counter and sits down, frowning. He crosses his arms. With his camel hair coat and grey hair, it was hard for him not to look like an old school professor.
“Mark, it’s your research. Dr. Bryant was always a big fan. He got you into the program and oversaw everything. I hope you appreciate all the water he carried for you over the last couple of years.”
I only nod, sensing where this conversation is going.
“You know he’s retiring, right? And well, with him gone, the University can’t really see itself dabbling in…sex research.”
“What do you mean? Like after I’m gone?”
He shakes his head slowly. “No, no. I’m afraid not. I mean this.” He uncrosses his arms to gesture around the lab.
“I mean over there.” He points to a wall of cages along the back wall, home to my dozen or so test rats.
“My God, man. They can’t stop fucking.” He shakes his finger angrily. “Look at that one, he’s fucking his damn food bowl. And that one, his dick is bigger than mine.”
That was probably an exaggeration, although Rat #7 did have a 4-inch penis, so it wasn’t outside the realm of possibilities.
“I just…we’ll still grant your degree. You’ve done the work. No one is disputing that. But we need you to turn everything in so we can destroy it. All your subjects, your formulas. Any samples you have left. We want to just forget about this whole thing and all get on with our lives.”
I look down at the floor, righteous anger blooming inside me.
“Fuck you, Bob.”
“Whoa, whoa…”
“No, fuck you. I’ve been working on this for 7 years. I’ve had letters from drug companies looking to patent the whole thing and make a lot of money. And you want to destroy it because you’re embarrassed? Fuck you and fuck this place. I have half a mind to walk out with my research right this second.”
At the sound of my raised voice, a campus policeman steps in from the hall.
“Everything ok here?” His hand is resting on his unstrapped gun.
“Now, let’s just all calm down.” Dean Kimball has his hands raised defensively.
“You’re not going to do that. And nobody wants any trouble. We’re fine, ok?” He waves the office back out of the room. “We’re fine.”
“Now look, you’ve worked really hard for this degree, right? Don’t mess that up. Here’s what you’re going to do. You’re going to walk right out that door and go have a nice relaxing weekend. When you get back in here on Monday, the whole lab is going to be nice and clean, and in a couple of weeks, you get a diploma in the mail. That doesn’t sound so bad does it?”
I grab my bag on the way out of the room but make sure to throw up a middle finger over my right shoulder.
“Fuck you, Bob.” I say again. I extend the same sentiment to three officers I pass in the hall.
That night at dinner, I have trouble keeping my mind on the happy occasion.
“Is everything ok at the lab?”
I smile weakly. Amanda is the best thing to ever happen to me. We met 5 years ago during undergrad, and while I’d been spinning my wheels in a research lab chasing degrees, she’d gone out and gotten a real job. Her marketing salary paid for most our apartment and lifestyle. Hell, she would probably pay for dinner tonight. And my plan had always been to sell my research, pull in a boatload of cash and retire to some island with her where we could spend our days making love like sea otters.
“Sorry, shitty day.”
“Well, at least you’re almost done, right? Then we’re going to be so rich, we’ll have to remember what it was like to wipe our own butts.”
I can’t help but laugh. She smiles.
I loosen up by dessert. Three glasses of wine certainly doesn’t hurt either. In the cab home, I’m focused only on her, my beautiful girlfriend. Five and a half feet of beautiful pale skin and eyes only for me. Her head is on my shoulder, and I smell her shampoo. I kiss her soft curly brown locks.
“I love you, Amanda. Sorry I was such an ass tonight.”
“I love you, too. We’ll see if we can’t cheer you up a little more when we get home.”
In my trousers, my cock jumps. (Bad day or not, I’m still a man.)

Back at home, Amanda disappears into the bathroom. “Slipping into something more comfortable”, she says.

I slowly disrobe, tossing shoes, shirt and pants in the direction of the closet. On the bed, I see my lab coat, tossed aside in my haste to dress for dinner. I pick it up and move to throw it into the growing pile of clothes, but something drops onto the carpet.

I had forgotten about the final sample! All my problems were solved! Fuck that fascist university. It would take a little time without my research, but with a proven sample and my memory, I could reverse engineer the formula again.

A crazy idea comes over me, and I quickly grab my phone. I start the video recording and lean it against a jar of change on my dresser. The view is centered on the bed.

I move in front of the camera and look directly into the lens.

“This is Mark Simmons.” I lean close, whispering to be heard on the recording but not overheard by Amanda. “It’s uh… August 24th, about 10:30 pm Pacific Standard Time. This is the first human trial of… shit…I don’t have a name for it yet. How about…Sex Panther. No, that’s stupid. Shit. Um… Formula 69?”

“Honey? Did you say something?” Amanda calls out from the bathroom.

“No, dear. Just waiting for you.”

“Ok, almost done.”

I take the small bottle and spritz the palm of my right hand. I dab some on my neck and then reach into my boxes and give my cock and balls a healthy coat. I toss the bottle onto the dresser and give the phone a thumbs up before jumping onto the bed.

The door to the bathroom opens, and Amanda steps out. She’s wearing a black bra and panty set, cupping her ample breasts into healthy mounds of cleavage. But the stockings and garters are what really catch my attention.

“Like?”, she asks.

“Very much like.” I reply, opening my arms for her as she climbs into bed.

At first, nothing is really different. We kiss each other with the same passion as always. Our bodies fit together as they always have, like hand in glove.

But slowly things start to change. The first thing I notice is how aggressive Amanda is becoming. From kissing to nibbling to straight up sucking at my neck, she’s uncharacteristically forceful.

“I…Please don’t think this is weird.” She says between biting my chest with her teeth. “But I have to suck you right now.”

Not one to disagree, I only reach up to place my fingers in her hair, encouraging her to go down on me.

Which also brings me to thing #2. A strange warmth had begun to throb in my groin. At this point, I’m sporting a full-on erection, but it feels oddly hot and hard in a way I can never remember feeling.

Amanda tugs at my boxers and gasps in surprise as my cock pops free and slaps against her face.

“Wow… are you bigger?”

I’d lived my life with a respectable 6 inches, but feeling the way Amanda’s hands and mouth are suddenly devouring my cock, I can’t help but agree that I must suddenly have more cock to offer.

Amanda has never struggled to suck me before, but it seems like she can barely fit the tip between her lips. Unabashed though, she tries again and again, sucking at my tip like a calf needing milk.

“Oh my God, your cock is so fucking big. I don’t understand, but I love it so much.”

She’s using both hands, slurping like a whore gone mad. I can feel her massaging my balls and tugging at me for all she’s worth.

“I’ve got to fuck you.” She’s not talking to me anymore, not really. She’s lost in some other place. Where normally, we’d kiss and cuddle before moving to penetration, now she’s pulling her panties to the side and straddling my waist. It’s the first glimpse I have of my own cock, and I’m dumbstruck. It must be 8 or 9 inches long, and thicker for sure.

I’m even more stunned to see my beautiful girlfriend, sweet and innocent Amanda, biting her lip and forcing inch after hole-stretching-inch inside herself.

“God damn, God damn, God damn”, she says, stuck on repeat. She must be incredibly wet already for my cock to slip into her so quickly. She’s shivering in convulsions by the time our hip bones touch, and I can see tears rolling down her cheeks as she continues to ride through the waves of orgasmic pleasure.

Not willing to be a mere bystander, I arch my hips, pushing her forward onto my chest. I reach down to grip ass, spreading her open and hammer myself in to the hilt.

She screams in a way I’ve never heard, shrill and animalistic. “Fuck me harder. Fucking fuck, Mark, Shove your giant goddamn cock in me.”

What else was I supposed to do? My hips hammer with the tempo and ferocity of George Foreman on a speed bag. Amanda is merely along for the ride. She says words I didn’t know she knew. So many words for cock that I think she changed languages at a few points.

Finally, I push her off. The drug is no doubt in my bloodstream now, and all I think can think of is breeding this slut with every single drop of jizm in me.

“Get on your hands on knees,” I growl. It’s something I’ve never said before, but wonder of wonders, Amanda doesn’t even blink. She’s lifting her ass in the air for me, presenting herself like an animal in heat. Her back is arched in a way I’ve never seen, almost feline in its angle.

I enter her in one thrust, burying every one of my newfound inches into her warm and welcoming cunt.

“You want my cock, slut?”

“Yes, daddy. I want your cock in me.” She begs and pleads.

“Beg for for it, bitch. You can me to cum in your cunt?”

“Fucking fill me up, Daddy. I want to feel you cum.”

Our hips slap together like the thunder of a gong. Flesh slapping together into a drum beat as old as humanity itself.

I erupt with a primal scream, escaping from a place otherwise sealed since our caveman days. I empty myself completely inside her. My cock spasming as it sprays its impossible load into Amanda’s gaping womb. And she’s pushing back to take it. Ensuring that I’m as deep as possible and that my seed fills her like a waterfall of life.

I grind myself into her even when I’m dry. My cock still throbs rhythmically but I’ve emptied whatever reservoir that I tapped into. When my softening cock pops free, a torrent of spent seed escapes my girlfriend’s gaping hole. She can’t bring herself to move yet, only reaches back with a hand to collect a few ample rivulets of cum and then sucks them off her fingers with a moan.

I look towards the phone, still blinking on the dresser.

*I’m going to be a fucking billionaire.*

Source: reddit.com/r/sexystories/comments/9iwq7k/human_trials_mfdrug_enhanced_libido