Chapter 13: Urethral Overflow
The grinding rhythm stuttered, then seized.
It wasn’t deliberate. Skye’s downward plunge had shifted Mae’s angle by a fraction. The broad, flared tip of the living dildo, slick and seeking, no longer pressed against Skye’s stretched entrance. It slid higher, along the sweaty undercurve of her monstrous new cock, until the small, puckered slit at Mae’s very apex found a different opening.
It aligned perfectly with the tiny divot of Skye’s urethra.
For a suspended second, nothing happened. Just the hot, slick contact.
Then, deep within Mae’s core, a valve opened. A spasm, primal and involuntary, tore through her. It wasn’t an orgasm. It was a release of pure, pressurized essence, directly channeled.
A thick, burning jet of cum fired straight into Skye’s piss-slit.
Skye’s entire body locked. A choked, airless sound scraped out of her. Her eyes blew wide, seeing nothing.
The sensation was beyond anything. It wasn’t pleasure or pain. It was intrusion, a liquid invasion following a narrow, sensitive tube never meant for it. The hot flood raced up her shaft, a reverse torrent filling the internal channels. She could feel it, a distinct, crawling heat moving through the core of her own cock.
Her hands, still wrapped around her girth, felt the change. The flesh beneath her palms began to swell, not from outside, but from within. It was like watching a sausage casing fill to bursting. The skin of her cock stretched, becoming taut and shiny, the network of veins flattening under the internal pressure.
“What… what is that?” Bree whispered, her analytical gaze locked on the point of connection. She saw the subtle pulse traveling up Skye’s length.
Skye couldn’t answer. Her mouth hung open, saliva dripping onto her heaving chest. The pressure reached the base of her cock, then forced its way into her scrotum. Her balls, already the size of softballs, began to distend. They heaved upward, swelling like overfilled water balloons, skin thinning to a translucent tightness. They grew to the size of cantaloupes, then larger, a heavy, sloshing weight that lifted her hips off the bed.
A low, continuous moan finally escaped her. “F-filling… me…”
Ronnie watched, one hand absently tugging at her own nipple, her face a mask of stark envy. “Holy shit. It’s pumping her full.”
The feedback loop had become an injection. Mae’s transformative essence, concentrated and undiluted, was flooding Skye’s most intimate plumbing.
Skye’s own cock, now packed with alien seed, began to grow uncontrollably. Two feet of length became three, the shaft pushing past her knees, a obscene tower of flesh. The girth expanded until it was as thick as a man’s thigh, her own hands now comically small, unable to meet around it. She tried to grip it, her fingers merely denting the swollen skin.
The changes ripped through the rest of her. Her hips cracked audibly, widening further to support the staggering central weight. Her breasts, dragged downward by the shifting gravity, now hung like overfilled sacks, the long teats brushing the bed sheets. The sheer mass of her was becoming untenable, a precarious sculpture of hungry flesh.
Skye groaned, trying to move her head. Her voice was a ruined thing. “It’s… it’s still going. Inside. It’s… changing things.” She meant the feeling in her balls and dick, a slow, internal churn. The transformation wasn’t over.