The Prototype That Wouldn't Stop

I’d been tinkering with the massage chair for weeks in my garage workshop. The thing was supposed to be the next big thing in home relaxation — AI-driven rollers, heat pads, even subtle vibration nodes that could target pressure points like a pro. At 29, I’d sunk most of my savings into it, so when my neighbor Lena knocked on the door asking what all the buzzing was about, I saw an opportunity.

Lena was 31, divorced, and worked from home doing graphic design. She had this easy, curious smile and a body that filled out her yoga pants in ways that always distracted me. “I’ll test it for you,” she offered after I gave her the quick pitch. “Free back rub? Sign me up.”

She changed into a thin tank top and loose shorts in my bathroom, then climbed into the chair. I strapped the safety belt loosely around her waist — more for show than anything — and started the program on low. The rollers glided up her spine. She sighed happily, eyes closing.

“Fuck, that feels good already,” she murmured, sinking deeper. “You might actually have something here, Jake.”

I watched the monitor, tweaking the algorithm. On a whim I dialed up the intensity on the lower lumbar nodes. The chair hummed louder. Lena’s breath hitched.

“Oh… that’s… deeper than I expected.”

Her hips shifted a little. I thought it was just settling in. I increased the pulse frequency by ten percent. The hidden nodes near the base of the seat started their micro-vibrations, something I’d designed to stimulate blood flow in the glutes and… well, adjacent areas.

Lena’s fingers gripped the armrests. “Jake? What the hell is that setting?”

“Lower back relief mode,” I said, trying to sound professional. My eyes flicked to the screen. Heart rate climbing. I should have stopped. Instead I bumped it again.

Her thighs parted an inch. The thin fabric of her shorts stretched tight over her mound. I could see the faint outline of her pussy lips through the material and my mouth went dry.

“Shit… it’s… vibrating right against my—” She cut herself off with a sharp inhale. Her cheeks flushed pink. “Turn it down. Or… don’t. I don’t know.”

The chair’s AI adapted, sensing muscle tension and increasing the rhythmic pulses exactly where they counted. Lena’s back arched. A low, needy moan slipped out of her throat.

“Jake… oh my god, it’s on my clit. It’s literally buzzing my fucking clit.”

I froze, cock already half-hard in my jeans. “I can stop—”

“Don’t you dare.” Her voice was husky now, eyes half-lidded. “It feels too good. Keep… keep going.”

I swallowed hard and adjusted the intensity higher. The chair responded with a deeper, rolling throb. Lena’s hips started rocking in tiny circles, grinding herself against the seat. The wet spot on her shorts grew darker.

“Fuck, I’m getting so wet,” she whispered, almost like she was talking to herself. “This is so embarrassing… but I can’t stop moving.”

Her breathing turned ragged. I stepped closer, pretending to check the shoulder harness but really just needing to smell her — that sweet, musky scent of aroused woman filling the garage. My hands were shaking.

Lena looked up at me, lips parted. “Touch me somewhere. Anywhere. I need more.”

I slid my hand down her stomach and cupped her through the soaked shorts. The heat radiating from her pussy was insane. I rubbed her swollen clit in slow circles while the chair continued its relentless vibration underneath.

“Yes… right there,” she gasped. “Don’t stop. I’m so close already.”

Her thighs started trembling. I slipped two fingers under the edge of her shorts, finding her bare, slick folds. No panties. She was dripping. I pushed inside her tight pussy, curling my fingers against that spongy spot while the chair’s nodes buzzed mercilessly against her clit from below.

“Oh fuck, Jake— I’m gonna— I’m—”

Her walls clamped down hard around my fingers. A gush of wetness soaked my hand and the seat. Lena cried out, head thrown back, body shaking violently as the orgasm ripped through her. The chair kept going, drawing it out, wave after wave. She squirted again, thighs quivering, a string of filthy curses tumbling from her mouth.

“Fuuuuck… cumming so hard… don’t stop… please…”

I kept fingering her through it, thumb circling her throbbing clit in time with the vibrations. When she finally sagged, panting and limp, I killed the power.

The workshop was suddenly quiet except for her heavy breathing and the wet sounds of my fingers still lazily stroking her pussy.

Lena looked at me with dazed, satisfied eyes. A lazy smile spread across her flushed face.

“So… how soon can you get that thing patented?” She licked her lips. “And when are you letting me test the ‘extra intense’ mode again?”

I laughed, heart still racing, already wondering what other settings I could secretly add before our next session.