Becoming a Hermaphrodite - Cover

Becoming a Hermaphrodite

Copyright© 2026 by Just Another Smut Writer

Chapter 13

Fiction Sex Story: Chapter 13 - I never set out to become a hedonistic, promiscuous hermaphrodite, but once it happened, I embraced every inch of the change without a single regret.

Caution: This Fiction Sex Story contains strong sexual content, including Ma/Fa   Fa/Fa   Mult   Consensual   Romantic   Lesbian   Heterosexual   Hermaphrodite   Futanari   Slut Wife   Incest   Mother   Daughter   Spanking   Anal Sex   Analingus   Cream Pie   First   Facial   Masturbation   Oral Sex   Squirting   Water Sports   Transformation   AI Generated  

After the Second Dose - Tuesday, March 10, Afternoon

I burst through the front door and stripped naked in the foyer, the second injection burning hot under my skin. David looked up from his laptop and his eyes went wide. I climbed straight onto his lap, my new little cock already stiff and leaking against his stomach.

“Fuck me,” I gasped, grinding my soaked folds along the hard ridge in his pants. “Right now, David. I need it.”

He didn’t ask questions. He stood, carrying me to the couch, and shoved his pants down just far enough to free that thick cock I love. I sank onto him in one greedy motion, my pussy stretching around every inch while my small shaft rubbed against his abs. The stretch felt even better than yesterday. My walls fluttered and clenched like they wanted to milk him dry.

He thrust up hard, hands gripping my ass. “Jesus, Mary, you’re dripping. What did the doctor say?”

I rode him fast, breasts bouncing, nipples scraping his shirt. “She ... she said my clit is turning into a cock. Two and a half inches already. And my breasts are getting firmer, bigger. She measured them.” I moaned when his cockhead dragged over that perfect spot inside me.

My phone rang. Dr. Jill’s name lit the screen. I answered without slowing my hips.

“Mary,” she said, voice already breathy, “the lab results just came back. Your sweat and vaginal secretions tested positive for strong pheromone compounds. They’re triggering arousal responses in everyone who comes in contact. I felt it myself in the exam room.”

I clenched around David’s cock at her words. “So it’s real?”

“Very real. And it’s probably getting stronger with each dose. How are you feeling right now?”

“Like I need to come on my husband’s cock while you listen,” I panted. David’s fingers found my growing shaft and stroked it in time with his thrusts.

Dr. Jill’s breathing hitched on the line. “Describe it to me.”

I told her everything—how my pussy gripped him, how my new cock throbbed between his fingertips, how my juices ran down his balls. David added filthy details between grunts, telling her how tight I felt and how much cum he was going to pump into me.

I came first, my walls pulsing, my little cock spurting thin ropes across his cock. David followed seconds later, flooding me deep. I stayed seated on him, both of us catching our breath while Dr. Jill stayed silent on the phone, listening to every wet sound.

When I finally lifted off, his cum leaked down my thighs. I scooped some onto my fingers and licked it clean, then offered the rest to David. He sucked my fingers greedily.

Dr. Jill cleared her throat. “I ... I should let you rest. Call me if anything changes.” Her voice sounded shaky.

I smiled, already feeling the next wave of heat building. “I will. Thank you, Doctor.”

David pulled me down for a slow kiss, tasting his own cum on my tongue.

David’s cock was still half-hard when the second wave hit. My new little shaft twitched against his stomach and my pussy clenched greedily. I rolled my hips without thinking, smearing his fresh cum deeper into my folds.

“Fuck, Mary,” he groaned, hands tightening on my ass. “You’re not done, are you?”

I shook my head, already panting. “Not even close. The shot ... it’s still working. I need more.”

He lifted me off his lap with a wet sound, cum sliding down my thighs. Before I could protest he flipped me onto my back on the couch and pushed my knees to my chest. My growing cock stood straight up, flushed and leaking, while my pussy gaped open and dripped.

David lined up and drove back in hard. The slap of skin on skin filled the room. Each thrust dragged over that perfect spot inside me and made my little cock bounce. I reached down and stroked it in time with his rhythm, the dual pleasure making my head spin.

“Tell me how it feels,” he demanded, voice rough.

“So full,” I gasped. “Your cock is stretching my pussy while I jerk my own little dick. It’s too much and not enough.”

He slammed deeper. “You’re leaking all over my balls. Smell that? Your pheromones are making me crazy.”

I moaned louder, stroking faster. My nipples ached, stiff and dark against my skin. David leaned down and sucked one into his mouth, teeth grazing the sensitive bud. The extra stimulation pushed me right to the edge.

My phone lit up again. Dr. Jill. I answered on speaker without slowing.

“Mary?” Her voice sounded strained. “I ... I can’t stop thinking about what you described. Are you still with David?”

“Yes,” I panted. “He’s fucking me again. Right now. Tell her, David.”

He thrust harder, making the couch creak. “She’s soaked, Doctor. Her new cock is dripping while I pound her pussy. She came once already and she’s about to again.”

Dr. Jill’s breath hitched. “Describe her body. How big are her breasts now? How long is her ... penis?”

I answered between moans. “They’re firmer. Heavier. My nipples won’t go down. And my cock ... it’s still growing. Almost three inches now. It throbs every time he hits that spot inside me.”

David reached between us and wrapped his fingers around my shaft, stroking it while he fucked me. The combined sensation made my vision white out. I came hard, my pussy pulsing around him and my little cock spurting thin ropes across his cock and his hand.

He didn’t stop. He kept thrusting through my orgasm, chasing his own. “Gonna fill you again,” he warned.

“Do it,” I begged. “Pump it deep. I want to feel it leak out of me for hours.”

 
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