Sam Pt 4

She was so huge now that she had a swagger when she walked. Her dedication to eating, juicing, and training was unbelievable, fueled by the fetish that grew beyond anything I could imagine. She seemed to love her own thick, huge, female muscle more than I did, and that was saying something.

I found her in our bedroom, watching her biceps in the mirror while curling 85 lb dumbells. She wore nothing but a pair of tight spandex boy-briefs, soaked from sweat and her own juices.

“Damn, look how fucking strong I am!” she said powering up the 85 lb weight with her left hand. 

“I’m like fucking supergirl!” she said curling the same weight with her right. I could see the wet spot on her briefs grow slightly.

“Haha oh shit, all this fucking strength is such a turn on!” she cried, dropped the weights with a huge crash, and did a double bicep pose that would put a male bodybuilder to shame. Twin peaks bigger than softballs rose from her arms as she grit her teeth and flexed hard. Small veins blew up and spider-webbed their way across both massive peaks.

I was turned on, how could I not be with all that raging muscle in front of me, but I was also annoyed.

“Hun, the windows are wide open, and you’re topless, not even wearing a bra…”

She turned to face me with a huge grin. “You think I need a bra with pecs like these?” 

Then she flexed, and her pectoral muscles bulged and striated into two phone-book sized masses of meat, criss-crossed with veins and sick muscular striations. 

“Haha, I don’t have tits anymore, so why do I need a bra?” she said, releasing her flex and slamming both fists against her rock-solid slabs of chest muscle with a slap.

“I mean look at these pecs,” she said, flexing the right, which bunched up and bulged outward by inches with her flex. She did the same to the left, laughing as it, too bulged with hypertrophied sinew. 

“I’ve got bigger pecs than most men! If guys can show theris off, I should be able to show mine off too!”

I shook my head. The Sam I had started dating was a sweet, nice girl, but ever since I got her involved in my muscle fetish, she had become something else. She was still nice, but she had a growing narcissistic streak, and I think she now loved her muscles more than I did. It worried me, but it was also the horniest thing that had ever happened to me. I was torn.

“I’m worried about you, Sam,” I said.

“Worried,” Sam laughed. “What for? I’m a fucking goddess now!” she said as she admired herself in the mirror and flexed up her bicep.

“It’s all the steroids, Sam. I’m worried they might be bad for you.”

Sam laughed again. “That’s cute, but there’s nothing to worry about. Look at me!” she said as she flexed her abs and they bulged out into an eight-pack that looked like a stack of cue balls criss-crossed with veins. She slapped it hard, then grabbed her tight, thick, muscular ass. “I’m healthy as an ox, and just as huge!”

I sighed. “But Sam, what about the side effects…”

Sam laughed again. “What, like a little acne? A little extra hair?” She lifted her arms and flared her lats. Her lats were so big, it looked like she had meat wings, and her armpits were huge. I could see some coarse hair sprouting in them. Had she stopped shaving?

“I’m an alpha, babe!” she said as she bucked her hips. Her abdominals bulged and rippled, and I noticed something else, a little bit of coarse black hair tufting up from her briefs. 

“I’m like a fucking lion, king of the jungle. Why shouldn’t I have a mane?”

My mouth just dropped.

Sam chuckled. Then she sniffed. “I can smell your arousal, babe. I know your cock is getting hard just watching my bulging muscles.” 

Then she reached for my crotch and squeezed. She felt my cock hardening. “See? I knew it. You like it, and I like it!”

She backed up, slammed her arms down in a most muscular pose and said, “So I’m going to keep FUCKING juicing, and get even HUGER!” Then she grunted and I could see her traps squirm and vibrate with hypertrophied muscle as her huge biceps collided with her thick, freaky pecs.

She released the flex and said, “Now be a good little boy and go get me another dose. NOW!”

My dick was hard as a rock. What else could I do but comply? I went to get the syringe and when I came back, Sam was staring at her reflection again, this time focusing on her thick thighs and ass. She would flex them, and they would bulge with angular, hard muscle. Her ass cheeks were so hypertrophied and lean that she had fist-sized gouges on the sides of each cheek, and I could see striations through her soaking, skin-tight briefs.

“Shit, look at my fucking ass, babe. I’m so jacked!” 

My eyes were wide. “So jacked!” was all I could squeak in response.

Sam chuckled. Then she grabbed her briefs and roughly tore then downward. Her thighs were so bloated from her flexing and excitement that the already tight briefs tore in half when she stretched them over her massive quads.

“Haha!” she laughed. “I’m growing so fast, I need all new clothes! Size extra-extra large!” 

Then she put her hands on her knees, glanced at her ass, and said, “Shoot me up, babe, hurry!”

She was almost shaking, like an addict waiting for her fix. I hurried to comply, as turned on as I could ever remember by her continually burgeoning desire to get even huger. I stuck the needle in and pushed the plunger. 

Sam moaned, “Unngh yeah, more baby!”

“But Sam, that’s more than the recommended-”

“MORE!” she yelled as her arms tensed up and thick blue veins bulged across her triceps and back. I jabbed her again, filling her with twice her normal dose, which was already freakishly high.

“OHH YEAHHH…” she moaned, flexing her left pec, then her right pec, then her biceps. She flexed her traps, and they squirmed and bulged, then she squatted and flexed her quads and calves. 

She turned, looked me in the eye, and flexed into a most muscular pose.

“Check it out, babe!” then she grit her teeth and flexed into a freakish, muscular flurry. Veins grew thicker as her pecs bulged out and her traps rose higher, vibrating with growth and energy. Her abs bloated bigger, thickening her waist, and her thighs bloated larger than ever.

I was hard as a rock as I watched Sam literally grow right in front of me, but I was also confused, seeing her naked pussy covered with hair that seemed to grow longer and coarser as it crawled up her abdomen. 

“I’m so fucking horny now!” Sam said as she grabbed both her pecs and squeezed, feeling their huge, freaky hardness.

“Unnghhh!” she moaned as her pussy suddenly and violently gushed juices, slicking the insides of her huge thighs.

“Oh yeah,” Sam bucked her hips, sending her juices splashing onto my face. Then she gave me a shove. She was so insanely strong that it sent me flying onto the bed. Sam roughly grabbed my jeans and tore them in half, ripping them right off my body. My dick was so hard it pointed straight at the ceiling. Sam licked her lips and crawled on top of me. 

Then she looked me in the eyes and said, “Time for a muscle FUCK!” then she roughly impaled herself onto my rock hard cock.

I felt equal parts pleasure and pain as Sam held my shoulders and slam-fucked me into the bed, bucking with such fury that the bed creaked and groaned under the power of her thrusts. She closed her eyes and moaned, “Unnghh yeah, gonna get bigger, baby, gonna get HUGE!”

She bucked faster and faster, and I reached up, feeling her massive lats, her rock-hard, bulging abs. She felt like she was made of granite.

“Ahh yeah!” she cried, grabbing her pecs and flexing them, feeling them fill her hands. She ran her hands down her abs, her hips, and squeezed her own ass. “FUCK YEAH, I’M GONNA BE HUGE!” She shouted, then started pounding me even harder.

“Ow…” I grunted almost involuntarily from the pain, but Sam didn’t even hear me, thrusting wildly.

“BIGGER THAN MARKUS RUHL! BIGGER THAN RONNIE COLEMAN! BIGGER THAN A GOD-DAMNED GORRILLA!” She shouted as her pussy vibrated and spasmed, belching enough juice to cover my mid section and soak the bed.

“OH YEAHHH!” she screamed, crunching down and flexing every muscle in her body as veins snaked around her shoulders, her neck, her forehead and her pecs, lats, and traps vibrated with the sexual energy of her orgasm.

She finally released her flex, panting. “Fuck, I love my muscles. I’m so glad you introduced me to this.”