Elena slipped through the heavy door of the abandoned storage room at the far end of the east wing, the lock clicking shut behind her with a satisfying snap that echoed in the dim space. Her heart raced with the thrill of secrecy as she leaned back against the cool wood, the faint scent of old chalk and dust mixing with the sweet, milky aroma already rising from her body. The 19-year-old's curvaceous frame strained against her tight school blouse, her heavy tits swollen and aching, dark nipples already leaking thin trails of warm milk that soaked through the fabric in damp patches. She dropped her bag to the floor and pulled out the oversized marker set she'd stolen from the art supply closet—thick, ridged cylinders in bold colors, each one wider than her wrist and nearly a foot long. Her pussy clenched at the sight, already slick and throbbing with anticipation as she kicked off her panties and hiked up her skirt, exposing her bare cunt to the stale air.

She sank down onto the threadbare rug in the corner, spreading her thick thighs wide and propping her back against a stack of old desks. Her fingers trembled as she uncapped the first marker, its blunt tip glistening under the single flickering bulb overhead. Elena pressed it firmly against her puffy outer lips, rubbing the hard plastic up and down her slit to coat it in her juices before pushing the rounded end inside. The stretch burned deliciously as the thick marker sank deeper, forcing her tight vaginal walls to yield inch by inch, the ridges catching on her sensitive inner flesh with every slow twist of her wrist. She moaned low in her throat, the sound wet and needy, as her cunt swallowed half the length, her inner muscles fluttering and gripping the intrusion like a greedy fist. Milk beaded at her nipples and dripped steadily now, soaking her blouse until the material clung transparently to her heavy tits.

With one marker buried to the hilt in her pussy, Elena reached for a second, thicker one in bright red. She worked it in alongside the first, grunting at the intense fullness as her cunt stretched wider around both shafts, the combined girth forcing her to breathe through the pressure. Her juices squirted out around the markers with every deliberate thrust, the wet squelching sounds filling the room as she pumped them in and out in a steady rhythm, angling them to grind against her G-spot. Sweat beaded on her forehead and trickled between her tits, mingling with the milk that now flowed freely, soaking her lap and the rug beneath her ass. She added a third marker, forcing it past her straining entrance with a sharp cry, her pussy lips stretched thin and shiny around the trio of plastic cocks as they plunged deeper, testing how much her hole could take before it gave out.

Her free hand roamed up to her chest, squeezing one heavy tit hard enough to send a strong arc of milk spraying across her belly and thighs. The warm liquid splashed against her skin, running in rivulets down to her stretched cunt where it mixed with her pussy juices and the precum leaking from around the markers. Elena's moans grew louder, turning into filthy gasps as she fucked herself harder, the markers slamming into her cervix with wet, rhythmic slaps. "Fuck, take it all, you greedy cunt," she hissed to herself, watching her belly bulge slightly with each deep thrust, her capacity pushed further as she rotated the markers inside her, feeling every ridge drag against her rippling walls. Her clit throbbed untouched, swollen and begging, while her ass clenched emptily, already craving the fisting she saved for later experiments.

The orgasm built like a slow tide, her thighs shaking as she monitored the markers' depth with each thrust, counting the inches buried inside her dripping hole. Four markers now, packed tight, her pussy lips gaping obscenely around the cluster as she ground her hips down, forcing them to press against every sensitive spot. Milk sprayed from both nipples in rhythmic pulses with each wave of pleasure, coating her body in sticky warmth that made her skin shine. Elena's screams echoed off the walls when she finally came, her cunt spasming violently around the markers, squirting hot fluid that mixed with the milk puddling beneath her. She kept thrusting through it, prolonging the intensity, her body shuddering as she expressed more milk onto her heaving tits and swollen belly, the warm streams running down to her overflowing pussy in a filthy cascade of sensation.

Elena lay there panting, her body still twitching from the aftershocks as milk continued to dribble from her swollen nipples in lazy rivulets. She pulled the markers free with a wet, sucking pop that left her cunt gaping and fluttering, juices and milk pooling between her spread thighs. The thrill wasn't enough; her ass ached for attention, and the thought of pushing her limits in a more public spot sent fresh heat flooding her core. She wiped her sticky fingers on her skirt, tucked the markers away, and slipped out of the storage room, her heavy tits swaying with each step as milk soaked through her blouse in obvious patches.

Navigating the quiet hallways, she made her way to the library during peak study hours, the low hum of students murmuring over textbooks filling the air. Her heart pounded with the risk as she slipped into the rarely used back stacks, finding a secluded aisle lined with dusty reference books where the lighting was dim and the shelves formed a natural barrier. No one was in sight, but voices echoed faintly from the main tables just two rows over, close enough that any sound she made could carry. Elena's pussy clenched at the danger, her ass clenching in anticipation as she dropped her bag and hiked up her skirt again, this time turning to face the shelves.

She grabbed a stack of rolled posters from a forgotten bin nearby—thick, tubular paper cylinders bound tightly with rubber bands, each one about three inches across and rigid enough to hold shape. Her breath hitched as she bent forward slightly, pressing the blunt end of one against her puckered asshole, smearing it with the slick mix of her earlier juices and fresh milk dripping from her thighs. She pushed slowly, feeling the resistance give as her tight ring stretched around the poster, the dry paper rasping against her inner walls before the natural lubrication took over. A low groan escaped her as the first inch sank in, her ass burning with the intrusion, milk spraying from her tits in small bursts that soaked the floor between her feet.

The risk heightened everything; she could hear two students discussing a project just beyond the aisle, their voices carrying clearly as she worked the rolled poster deeper, twisting it to force her sphincter wider. Her heavy tits leaked steadily now, warm milk running down her belly and dripping onto the poster as she pumped it in and out of her ass, the wet squelching sounds barely muffled by the shelves. Elena bit her lip hard to stay quiet, but a soft whimper slipped out when she added a second poster alongside the first, her asshole straining obscenely around the double girth, the stretch making her cunt throb and drip onto the floor. The fullness was intense, her anal walls gripping the rigid tubes as she rocked her hips, milk flowing faster with each thrust.

Sweat and milk coated her skin as she progressed, adding pressure with her free hand to work in a third poster, her ass gaping wider to accommodate the trio of rolled paper. The students' laughter from nearby sent a thrill through her, forcing her to freeze mid-thrust with the posters buried halfway, her hole clenching rhythmically around them while more milk spurted from her nipples in response. Once the voices resumed, she resumed fisting herself progressively, curling her fingers into a tight fist and pressing the knuckles against her stretched rim, pushing them in alongside the posters with deliberate slowness. Her ass swallowed her wrist inch by inch, the tightness gripping her forearm as she rotated her fist inside, feeling every ridge of the posters drag against her sensitive flesh.

Her other hand squeezed her leaking tits hard, directing arcs of milk onto her thrusting fist and the posters as she worked deeper, the wet sounds of her fisting filling the aisle despite her efforts to stay silent. The students shifted closer, their footsteps audible, but Elena couldn't stop, her ass pulsing around the deepening fist and posters, her body trembling with the effort of holding back louder moans. Milk poured freely now, soaking her blouse completely and running in streams down to her fisted asshole, mixing with the sweat on her thighs as she pushed her limits further, the progressive stretch sending waves of raw pleasure through her.

Her body convulsed around the buried fist and posters, her asshole clenching in rhythmic spasms that dragged her knuckles deeper against her tender inner walls, the rigid paper tubes scraping and stretching her rim until it burned with a hot, pulsing ache. Milk sprayed from her tits in forceful arcs with every thrust of her arm, soaking the back of her skirt and puddling on the library floor as her cunt gushed fresh wetness down her thighs. The students' voices drifted closer again, forcing her to

Lactating Limits: Elena's Secret School Experiments