Chapter 18: Udder Penetration
The low, persistent hum of the Bull's Pride vibrated through the hay-strewn floor, a counterpoint to the frantic thudding of Mark's own mutated heart. He was pinned, kneeling awkwardly, the heavy, unfamiliar weight of the pink udder-sac dragging between his thighs. Each pulse within it sent a fresh wave of sickening, electric sensation up his spine – a reminder of the violation moments before.
Samantha loomed over him. Her tail, a thick, tufted appendage that hadn't been there a week ago, twitched with restless energy, swatting flies that didn’t exist. Her eyes, dark and glazed with a hunger that went beyond understanding, were fixed on his trembling form. The engorged udder beneath her own body swayed heavily with every movement, dribbling thick cream onto the hay near his knee. The smell was overpowering – damp straw, sweet milk, the sharp tang of his own strange emission still clinging to her muzzle.
"Alright, sugar-udder," she breathed, her voice a low, rough purr. Her thick fingers, surprisingly deft, grasped the small, hypersensitive cock-teat protruding from the center of his sac. Mark flinched violently, a choked bleat escaping him. "Time to try the other hole. See how you fit."
"No! Sam, please!" Mark gasped, trying to twist away, but his limbs felt leaden, uncooperative, like they belonged to someone else. The changes weren't just external; a profound lethargy, a bovine passivity, was seeping into his bones. "It’s… it’s not… I can’t…"
"Shhhh," Samantha cooed, a grotesque parody of tenderness. She positioned herself above him, lowering her massive hips. Her own sex was swollen, glistening wetly, dripping clear fluid that mingled with the milky residue on her udder. "Just relax. Let it happen. Gonna feel real good." Her tail lashed excitedly.
With horrifying certainty, Mark felt the slick heat of her descending. Her thick fingers guided his pulsating cock-teat, angling it upwards. The sensation was excruciatingly intense, a raw nerve exposed. He screamed as the tiny, rigid tip breached her swollen outer lips.
The moment it slipped inside – a tight, wet, impossible fit – his entire body went rigid. Then convulsed. Violently.
A thick, iridescent rope of viscous cum erupted from the cock-teat, propelled by a spasm deep within the udder-sac. It wasn't a spurt; it was a pressurized jet, slamming into Samantha's depths. Her eyes flew wide, not in pain, but in stunned, overwhelming ecstasy.
"Fuuuuck!" she bellowed, a guttural, almost bovine sound. Her internal muscles clamped down instantly, a vise-like pressure that milked him ruthlessly, triggering another convulsion, another powerful jet. "YES! Oh god, Marky! Like a fucking milkin' machine! Don't stop! Don't stop!"
Mark was beyond words. His body was a puppet jerked by agonizing, unwanted ecstasy. Each convulsion drained him, physically and mentally, leaving him hollow and trembling. The spray was continuous now, a forced ejaculation fueled by her clamping cunt and his own traitorous physiology. He could only watch through tear-blurred eyes as Samantha rode him, her massive breasts swaying, her udder swinging, her face contorted in pure, animalistic rapture. Her tail whipped the air furiously.
It felt endless. The pressure. The violation. The strange, humiliating fullness in his sac being violently emptied only to somehow instantly refill. Hay stuck to his sweat-slicked skin. The scent of sex, milk, and that sharp, alien musk filled his nostrils, choking him.
Then, abruptly, Samantha froze atop him. Her ecstatic moan cut off into a sharp gasp. Her internal muscles, which had been rhythmically squeezing, now clenched in a different way. A spasm of pure, unmistakable panic.
Mark felt it too. A deep, resonant thrum echoing through her body, originating low in her belly. It vibrated against the cock-teat still embedded deep inside her.
Samantha's eyes, wide with sudden horror, locked onto his. The predatory hunger was gone, replaced by raw, primal fear. "No," she whispered, voice cracking. "Oh, fuck no." She scrambled off him, the cock-teat slipping out with a wet, sucking pop. Thick, pearly fluid followed, dripping onto the hay between her feet.
She stumbled back, hands flying to her lower belly, pressing hard. "It can't… it’s not…" She stared down at the mix of fluids staining her thighs and the floor – her cream, his iridescent cum. "It felt… deep. Too deep." She looked up at Mark, her muzzle trembling. "Mark… did it…? Can it… breed?"
The word hung in the hay-scented air like a physical blow. Mark could only stare back, his own terror mirroring hers. His udder-sac pulsed, already beginning to ache with renewed pressure.
Samantha’s panic sharpened into frantic action. "Gotta get it out!" she gasped, her voice tight. "Can’t… not like this!" Her gaze darted wildly around the transformed room, past the cow-patterned posters, past the dangling cowbell, landing on the milking stool in the corner. Without another word, she grabbed Mark’s arm, her grip surprisingly strong, and hauled him towards it. "Up! Get on the stool! Now!"
Mark stumbled, his legs weak and uncoordinated. The cold dread of what she intended warred with the bizarre, insistent ache building again in his sac. The low hum of the Bull's Pride seemed louder now, thrumming in time with the terrified pounding of his heart as she shoved him roughly onto the stool’s hard seat. His udder-sac hung heavily beneath him, the tiny cock-teat gleaming wetly in the dim light. Samantha knelt before him, her eyes wide with fear, her fingers already reaching, not with desire this time, but with desperate, horrifying urgency.