Sally 6

Over the next few weeks, Sally was proven so right. We were at the gym, wearing matching skin-tight wife beater type sleeveless tops. My pecs bulged almost as huge as hers, barely contained by the thin cotton garment. My arms surged with veins and massive biceps and triceps as I grunted and curled 95 lb dumbells. Sally watched, licking her lips as I pumped the heavy weight.

“Come on bro,” she urged, “push it, get bigger!”

I grunted and kept pounding the weights up and down. Out of the corner of my eye, I watched Sally. On the bottom, she wore tight lycra shorts that barely contained her thick quads and straining cock, and I could see her balls swell and her cockhead bulge as she watched me pump my muscles.  I wore cotton briefs that clung to thick, bulbous glutes. You could see the outline of my own big cock and heavy balls in the front. 

It was so hot, the two of us, skimpily clad, pumping our muscles bigger and bigger at a public gym. People stared, but no one dared to interfere. We were so built and shredded that everyone around, even the staff, were intimidated.

I grunted one last time, powering the weights up for my twentieth rep. I shouted, then dropped the weight with a huge bang. Then I flexed into a double bicep pose. Thick, striated muscle rose from my arms.

Sally came up behind me and felt those big biceps. “Not bad, bro!”

Then she wrapped her hand around my waist and felt my thick abdominal wall. I had grown abs the size of apples, and they bulged and contracted when I moved. She slid her hand up my thin cotton top and squeezed my pecs. They were huge, thick, hard and striated. I flexed, filling her hand with hypertrophied pec flesh. I felt her cock throb and pulse into my glutes.

“Yeah, babe, I’m bigger than ever!” I said, putting my hands on my hips and flexing my lats and pecs. My top started to tear, and I felt Sally’s cock throb bigger. I smiled as my own cock throbbed, beginning to tent my briefs.

She stood beside me and looked into the mirror, eyeing my burgeoning physique as well as her own freakish musculature. She crunched down into a most muscular. Her top tore as her muscles surged.

“Ungh!” she grunted. “All this beef is so horny!”

“Fuck yeah!” I breathed, straining into my own most muscular pose, willing my muscles larger, watching them engorge with veiny beef. We both grit our teeth and clenched down harder, watching our muscles swell. Our tops could no longer contain us as they tore to shreds and fell away.

Our nipples, pointing straight at the ground from the sheer volume of the pec shelf above them, were the size of shot glasses and harder than granite. Our bottoms were both tented to translucency, wet spots appearing at the tips of our cockheads were precum dribbled out.

Sally released her flex and breathed. “Bigger, baby!” then she bucked her hips. Her lyrca bottoms tore as she flexed her gargantuan thighs. Tufts of thick pubic hair spilled out as her cock and balls burst forth, huge and hard. Her cock was so big and thick it made a huge slapping sound as it slammed against her abs and pecs. Not to be out done, I flexed my own glutes and thighs and bucked my hips, and my own hard on busted through my briefs and slapped against my abs. My big thick balls hung down amongst a maine of thick coarse pubic hair.

“Oh fuck, I’m horny!” Sally cried, turning and mashing her thick cock against mine.

“Oh fuck, me too!” I moaned, grabbing her arms and feeling her thick biceps. Sally stretched her neck and grasped my thick cockhead with her teeth. I moaned as she gagged and glugged, belching saliva onto my cock, slowly sliding her mouth over my shaft. 

Then she bobbed her head and did something unexpectedly mind boggling. She grasped her own hard on and shoved it toward the corner of her mouth. Slowly, with a sound like rubber stretching, she stretched her lips over both of our cockheads. She gagged and blenched more saliva, coating both cocks.

I moaned and my balls throbbed at the unbelievably horny sight of Sally gorging on both of our huge cockheads at once. She gurgled and belched a torrent of saliva that slid down my shaft and slicked my balls.

She pistoned her thighs and shoved her cockhead further, into her throat, then forced her head down, taking my cock in deeper. She started slamming her head, face fucking us both simultaneously, as I moaned wildly. I ran my hands along the bulging sinew of her back, lats, and triceps, lost and reeling at the overly erotic sensations.

Sally grunted and moaned, then shouted a garbled shout through a mouth full of cocks, “BIGGER!”

It was so unbelievably erotic that I could not hold back. I roared and came. So did she. Her neck bulged and contracted, pumping both cocks. Her stomach bloated as she gorged herself on our double-dose of cum.

When she finally released both cocks, her bloated abdominal wall looked like a small pregnancy. She licked her lips and pressed her abs against mine. 

“Fucking awesome, sis, how’d that taste!” I panted.

“Here, have some!” she said, cupping her lips over mine as she pressed her stomach against mine. Her abs pumped and she blenched our mixed cum down my throat, passing nearly half the full amount into me. I gulped it down greedily.

She pulled away, reams of cummy saliva falling from our mouths. “Fuck!” was all I said.

“Fuck yeah!” she replied, licking her lips, as her cock became semi-erect. “I’m horny again!”

I looked down and smiled. My cock was hardening, too. “Me too!”