The experiment continues

Anna’s pet experiment had been a real treat. Trying to implant a weakness deep within her older brother’s mind, to see if even a strong boxer like him could be trained to get knocked out by a specific stimulus… A few weeks had passed since Anna switched the “stimulus” to the milf picture, for the sake of her experiment.

A printed picture of a smiling, incredibly busty bikini-clad blonde woman on a beach, holding a floppy sun hat to her head against the wind. Anna would hold it just in front of Billy’s face, let him take it all in… Then come in with a punch for an easy knockout. Teaching him to associate the image with quick and easy sleeping.

Early on, Anna had introduced an additional element to her stimulus. To deepen the association, she had begun dousing the image in a specific perfume each night, to stimulate Billy’s nose at the same time as his eyes took in the sight of the busty blonde. It was sweet, feminine, and gleefully hand-picked after much research…

Smell was closely linked to memory, so Anna hoped that by having a specific scent associated with her older brother’s knockouts, she would see better results. And it had worked. Oh, it had worked wonders.

Anna sighed, satisfied, and leaned back in her chair. She had just finished typing up the first draft, going over her experiment’s results so far. They really were incredible to consider… Anna brought a hand up, running it gently over her neck.

“God… Mmmnngg…” she moaned, adjusting her butt in her chair. Her lab coat had been placed neatly over the back of it, leaving her in just a bra and panties.

The academic nerd had been pent-up for most of her life - sexually repressed. But she had been masturbating a LOT recently. She couldn’t help it! Each night, getting to KO her irritating older brother, slowly worming a powerful weakness into his brain… Then going over to her laptop, recounting the night’s events… Reminiscing over how they compare to the previous nights. Rewatching the footage…

How could she NOT finger herself stupid?

Anna’s fingers tightened slightly, around her neck. She gasped, feeling her pussy twitch under her panties.

Anna sighed. Fuck it. She had earned this. Slipping a hand under her waistband, she navigated to her “footage”, and decided to study the greatest hits of the last few weeks some more…

---

[Experiment Log - Day 21] Success!

This was her favorite. The night that the experiment finally started to work. The night that Billy got knocked out by a perfume-scented picture of a stacked milf in a bikini… Anna skipped forward in the video, to the moment of truth. She knew the timestamp by heart.

“-nd let’s not forget, Billy. We need to check in with your boss!” the Anna on the laptop joked, as she produced the picture and held it right in front of her older brother’s eyes.

As usual for these experiments, Anna had been dressed in nothing but her underwear and a labcoat. It was strangely empowering, even if it had been embarrassing at first. A cool mix of femininity and hard science. A unique opportunity to explore something she rarely got a chance to.

The Anna on screen held the picture out, counting the seconds in her head as Billy drank it all in. The casual routine of watching her older brother, confused, gawking at the busty blonde beach milf.

There was a long pause. Fuck, Anna loved the way Billy’s eyes widened, scanning the picture left and right with some kind of confusion behind them. He looked lost. The tip of his nose twitched as he sniffed the air, taking in the thick scent of the womanly perfume the picture had been doused in. Suddenly, his eyelids fluttered for just a second.

“Annnndd… Okay. Had enough? Now it’s time for the knockout. Get ready, Billy,” the Anna in the video continued.

At the time, she was just going through the motions. Following the procedure. She had missed what the camera hadn’t. The way Billy’s panicked, confused eyes scanned the image quicker… The way his nose twitched faster and his nostrils flared. The strange fear in his eyes, too enchanted and lost to know why the synapses in his brain were slowly flickering off. One… By… One.

But the camera had caught it all. It caught the moment a quiet gasp got stuck in his throat. The moment his eyes froze, locked in place right in the center of the busty milf’s tits. The last twitch of his nose, as the heavy perfume finally permeated his brain… Slowly spreading across its neural pathways… And shut them off.

Moments before Anna pulled away the photo, her big, scary brother went out. ****. Dropped into a sweet, soft slumber by a scented image held in his face.

“Guhhhhhhh…” air escaped Billy’s mouth, feebly, as his body slackened and sunk further into bed. A champion no more.

In the video, Anna paused. Now she was the one looking confused.

“Uhhhh?” she asked, letting the arm holding the picture dangle by her side. “That was a pretty embarrassing noise, bro.”

No response. No movement. Only then did she finally realize what had just happened - what she’d just accomplished - and her face lit up with joy.

“Wait, no way! Ohmigod! No way… Knockout! It worked! Hold on, I have GOT to get a better look at this!”

Moving fast, and with glee, Anna bent over her slumbering older brother and lifted one of his eyelids. Pure white. Holy shit, his eyes had rolled up into his fucking skull.

“Ohhhh my god… It’s a good one, too…”

She went along his body, checking the results. Testing the limp mess of his limbs, reveling in the way his toes had curled up. It was a proper, proper knockout. All from a picture.

Anna skipped forward in the video, fingering herself faster. A moan escaped her lips.

She remembered this night vividly. It was the first sign that her theory was true - Billy getting groggy when he saw the milf and sniffed her scent had been lovely, but this was proof that a knockout stimulation could be implanted. A weakness could be set into her big bro.

Anna could hardly believe her success when it had happened. She spent most of the night waking him up, and putting him back out again with the picture, to mixed results. Sometimes it took a little bit more, sometimes it took a whole punch, but the results were clear… This could knock him out. And by the end of the night’s unending rotations, it would knock him out. Every single time.

“What a terrible weakness you’ve developed~” Anna laughed. Billy was groaning in bed, having just been shaken awake again.

The Anna in the video loved this just as much as the Anna watching weeks later. She was in control now. His very psyche was hers to play with. All those times he’d teased her, or overpowered her to get something he wanted… But now her clever mind had overpowered him. Left him groggy and rolling in bed on his back.

Anna smiled, seeing the way his nose twitched. She flipped around the picture again and held it close, just in front of his face. Billy’s eyes again fell into the milf’s tits, wide and confused, as his sister showed him the picture.

“Ooohhh…” Billy moaned weakly, the scent wafting into his nostrils. His eyes rolled up, and then he collapsed, landing on the mattress with a small bounce. Again!

Anna chortled to herself, seeing him drop onto his back. “The stimulus worked~” she said, proudly.

It really was official. Her scientific mind had taken down the muscular brute. Thanks to her hard work, Billy’s brain had been shut down in an utter knockout through a stimulus - completely bypassing the martial skills and physical fitness he had spent so long developing. Anna had trained him like a dog, and now, he was doing fucking tricks for her.

On the floor beside the bed was the boxing glove she had intended to knock Billy out with earlier - now obsolete, and long since discarded. As it turned out, boxing wasn’t a worthwhile skill to master. It hadn’t helped Billy out any - it hadn’t protected THIS “master” from a near-instant knockout. She chortled at the thought.

Anna wasn’t sure which was better. The times like this, where he didn’t even get up after he awoke… Or the times when he got to his knees, only to see the picture and faceplant pathetically in bed.

Anna took Billy’s face into her hand, smirking as she rolled her older brother’s limp head from side to side. She brought the picture in closer, to rub teasingly against his **** cheek, and revelled in the way his nose began twitching again. Her pussy lips were doing something similar, but she tried to keep it professional for now…

This would be the last one of the night. As much as she wanted to continue… She’d seen enough, and she wanted to document it all. And make backups. LOTS of backups.

Anna smiled, tucking the picture into her lab coat pocket. She reached out with her hand, and ran her fingers over his outstretched biceps. These perfected, sculpted muscles, requiring a lifetime of work to build up… Completely dormant. Subdued. Useless.

“I guess you’re more of the strong, silent type after all…~” Anna smiled, mocking her usually-arrogant older brother.

How long had he stolen her glory with his sporting achievements? Well not anymore. Her experiment had worked. She had his number now, that was for sure… And she’s proven that her brains outmatched his brawn any day.

“Good night, big bro.”

Anna hopped off the bed, and left him to sleep it off. She tried to maintain a cool demeanor as she walked off, but from the way her bare thighs rubbed together, it was obvious that she was seconds away from pleasuring her squelching pussy as she ended the recording. Obvious even if it wasn’t still such a wonderful, personal memory to the footage’s current viewer. One hand working frantically, Anna navigated to another night’s footage with the other. Panting desperately as she moved from video to video.

---

[Experiment Log - Day 26] Yet Deeper…

This time, they were both standing up in the bedroom. Anna again navigated to the moment of truth, breath coming in heaven, and pressed play.

“Any last words?” Video-Anna smiled, waving the back of picture around in front of Billy’s eyes. “This sexy little milf and her sweet perfume are about ready to make you go night-night.”

With the sweet, heady scent of that feminine perfume entering his nose and piercing his mind, Billy was already wobbly. His powerful legs dipped, and a groan escaped his lips. Anna smirked. The arrogant athlete was wrapped riiiiighhtt around her little finger~

As Anna waved the picture around, Billy’s eyes followed it automatically, like it was a hypnotist’s swaying watch. But it was still just the back of the image - the stimulus had yet to be fully input. Catching only the faintest whiff of that perfume, Billy still had a chance.

Gritting his teeth and calling on some of that legendary toughness of his, Billy dug deep and managed to resist. Resist knocking out to the faint perfume, and the familiar teasing lilt of his labcoat-wearing younger sister. Anna raised an eyebrow, but the smile never left her face.

Eyes narrowing, Billy spoke out defiantly. It was a remarkable, deeply impressive display of willpower and mental fortitude, but somehow, he managed it. Anna’s big brother managed it, like the legendary athlete he was.

“I- I won’t- be put to sleep by…”

Anna grinned, and flipped the photo around. Immediately, Billy’s jaw dropped as his eyes absorbed the busty boobs of the woman in the picture… And then he was out again. The electrical signals in his brain, meant for interpreting what his eyes had seen, got tangled up - and just like that, Billy was facedown and ****. Put to sleep by the chest cheat code planted deep into his psyche.

“Hah! You were saying…?” Anna grinned, lowering her arm and poking him with a toe. The school legend didn’t stir. The signals had gone straight through his eyes into his brain, and commanded that he sleep.

Anna scoffed, stuffing the picture into her lab coat pocket and turning to note another success in her experiment logs.

“You’re so fucking dumb…” she shook her head, laughing, as she turned off the camera for the night.

“Nnf! Gghhnn~~! Ah!”

Anna’s frantic finger-fucking was reducing her to a primal, grunting wreck. Her needy, hungry pussy was throbbing for more. Reaching out one shaky hand, she barely managed to switch to another video, before falling back into her chair.

---

[Experiment Log - Day 31] Outboxed!

“-on’t think so? Let’s see what your boss thinks about that…” Anna smirked, as she taped the perfumed picture to the end of a boxing glove.

This was today’s footage. A special day in the experiment. The day Anna used her clever mind, and wildly successful results, to dominate Billy in a mocking facsimile of the sport he was king of.

Anna had mounted Billy, pinning him down in bed, as she put her special weapon together right before his eyes.

“…’s not… my boss…” Billy spoke, weakly. Anna just grinned. She was about to make a laughingstock of his whole career.

Anna used the glove, and that scented picture, to their fullest. In one motion of her arms, the picture was brought close to his face. Billy’s eyes widened in awe. Surprise. And soon after - the sweet perfume penetrated his brain - and he slumped back in bed. Eyes rolled up in his skull, jaw falling limp. His mouth hung open like a moron.

Thanks to Anna’s new little creation, just punching towards Billy can knock him out. The legendary, skilled, highly-touted champion was falling victim to a no-contact KO. Put to sleep in his own bed, by his own little sister. What an interesting way for his legend to flicker out.

“What a loser!” Anna laughed, in the video playback.

Smirking, she lay down beside him. Anna snuggled up against Billy’s back, and curled her gloved arm around him - holding the picture right near his face, rolling the glove around in small circles, letting the sweet perfume waft into his mind to keep it nice and offline. Stripping him of his powers. Stripping him of his legacy.

Once she was satisfied that he wasn’t going anywhere, she withdrew her arm and threw the glove across the room. Big bad Billy was utterly pacified. Sedated.

With her now-bare hand, Anna reached up teasingly and began stroking a finger along Billy’s chin. Her small finger went up and down, as she lay next to him - one leg over his defeated body, her head propped up in one hand. Up and down, uppp and dowwwnn~~

“Mmm-mmmm…” Anna teased, gently tracing his chin back and forth with a fingertip. “That’s good… You’re done, bro… You’re so done.”

Anna squeezed her body closer to his. Thanks to her open labcoat, she was rubbing her panties right on his back. She squeaked in pleasure, and her teasing, gentle strokes to Billy’s chin sped up.

“Oh… I… Faaaahhh…”

Now Anna was the one gasping, and looking awestruck. Her fingers wrapped around his chin, clutching it in a tight squeeze as a pleasure wave washed over the young scientist.

“You… You’re nothing. You’re mine~!” she commented, squeezing his chin tighter, gasping, and then going back to those gentle chinstrokes - much faster now. Her breathing came quicker too. “You lost. I beat you. This nerd beat your dumb butt!”

---

At her desk, the video played on Anna’s laptop screen. She was barely paying attention to it anymore.

“Ghnn~! Guh! Nnnggh!~~”

Anna’s body was fucking glitching all over the place, as she violently bucked and thrusted into her hand. All at once, her sweaty, ragged body came explosively, launching her long-repressed girlcum out from between her legs as she shook in place in her chair. Her pussy utterly defeated by pleasure. Embarrassingly losing to the very same fingers that had been on Billy’s chin an hour before.

“GHHHIIUUUUEEE~~!!!”

That last insult had been the one to do it. “This nerd beat your dumb butt!” - for some reason, hearing that just opened the floodgates. Her fingers kept working, pushing herself through the powerful, quaking orgasm.

“WH-WHUH-WHAT A MORON! GHNN… WHUT A LOO… LOOZER~!” she yelled, staring at her laptop screen’s image of Billy’s KO’d face for as long as she could stop her face from scrunching up in pleasure. Finished off by a picture… Who would have guessed?

Anna was shaking and spasming like she was having a fucking seizure as the orgasm overtook her body. The petite nerd couldn’t hold it back any longer. It was too fucking powerful. Powerful enough to turn even Anna’s clever mind stupid. To dull even her sharp wits.

“GHUUUHHIII GUH GUH GHIIII~!” Anna grunted unintelligently as the last of the orgasm ran through her worn, sweaty body. A far sight from the cool, classy, professional scientist she had been just earlier. She looked more like a worn-down, wanton slut. And that’s exactly what she was.

“GUHHHHHNNG~~ Ah! Ahhh! Ahhh… Nnnngh… Ohhhh… Ohhh…”

When her body finally stopped glitching out, and her pussy stopped quaking, Anna collapsed back into her chair - spent. Her thighs and fingers covered in pussy juice.

She was still a bit temporarily dumb, her keen mind stomped and trodden on by the night of sexual gratification, as she sighed and closed her eyes. But she’d earned this. She’d earned a chance to turn stupid. Her experiment had worked. It was a success.

It was a fucking success.