Tracy and Shannon 1

Tracy was sitting in the sun, wearing her red two-piece that showed off her lithe, thin form and her well-proportioned D-cup rack. She was proud of her body, having put a lot of effort into dieting and cardio to stay trim.

As she was sunning herself, she felt a shadow pass over her and move a few chairs away. She opened her eyes to see a really muscular guy taking off his shirt to lay down and sit in the lawn chair a few feet away.

She couldn’t help but notice the guy’s thick, rippling quads filling out his baggy shorts, my gosh they had massive veins and striations. And damn, look at those calves, as big as softballs with a big split down the middle and wrapped in veins. She was getting turned on just by looking at this guy’s legs!

Her pussy really started to get wet as her eyes moved up to take him his thick cobblestone abs, with big bulging obliques and baseball-sized abdominal blocks. His vascularity was insane, with feathery striations and veins rippling up and down that eight-pack.

As her eyes moved upward, she experienced a sudden moment of incongruity. As this mountain of muscle hunk finished pulling his shirt off his head, made more difficult by thick shoulders and biceps that kept smashing into one another because they were so bulky, Tracy finally noticed that she wasn’t looking at a man at all. Atop a wide, craggy neck of bulging trap muscles sat the face of a pretty blonde girl with high cheek bones and piercing blue eyes.

This muscular behemoth must have noticed Tracy staring because she returned a broad, toothy smile, “Hello, my name is Shannon.”

Tracy’s jaw practically dropped as she took in this woman’s massive pectoral plates, showing veins and striations, barely contained in a straining lycra sport top. It was a women’s sport bikini top but it was stretched at all blocky angles, filled nearly to bursting with stacks of this woman’s pectoral mounds.

“S- Sorry,” Tracy stammered.

Shannon’s muscles shook with a deep masculine chuckle, sending rippling vibrations across her upper body. “That’s okay. I get that reaction a lot.”

“You’re just so…” Tracy began.

“Huge?” Shannon said with a big shit-eating grin. She flexed up a massive bicep that looked as big as Tracy’s head. Then she turned her head and grinned at it.

“Wow,” Tracy breathed. “Can I… touch it?”

Shannon chuckled again. “Sure thing, babe!” Then she leaned over.

Tracy’s eyes practically bugged out as she got a close-up view of those thick, striated pecs, pulsing with veins and sick vascularity. She tentatively reached out, then practically moaned as she felt the bulbous mound of Shannon’s football-sized bicep. Tracy had the sudden urge to put her hands all over this massive, muscular body, to feel up all this thick, surging musculature. But she was just barely able to restrain herself.

Shannon just smiled, backed away, and sat down on the lawn chair that creaked loudly under what must have been a tremendous weight compared to a normal human girl.

“Um, do you mind if I ask,” Tracy asked shyly, “why you decided to get so huge?”

“Why?” Shannon said with a chuckle. “Most people ask me how, not why.”

Tracy smiled nervously but didn’t reply.

“Well,” Shannon said, turning her torso toward Tracy, “ever since I was a kid, I always loved muscle. I used to watch the incredible hulk, then bodybuilding contests. When I hit puberty, the idea changed - muscle became a turn on. I decided to start working out to see if I could become like those bodybuilders, but the more muscular I got, the more sexually stimulating it became.”

Tracy blinked, a bit taken aback by the forwardness of the answer. Shannon just smiled, knowing the effect her assertive boldness had on others.

A sudden ripple erupted from the bottom of Shannon’s pecs and rolled toward her neck. Tracy practically gasped as Shannon flexed and said, “It’s just so fucking sexy,” she rasped, punctuating the statement with another rippling flex of her pecs, “to be this muscular.” Then she smiled again.

Then Tracy imagined it, having thick, blocky pecs that she could flex at will, and thick, muscular arms, a torso with a wall of plated muscle, god she was getting so wet just imagining it!

“Do you think I…” Tracy started to ask, trailing off as her face flushed with a tinge of embarrassment.

“Do I think you could become like this?” Shannon asked, finishing her though as she flexed into a huge double-biceps pose with a big grin. The craggy landscape of her shoulders and biceps was unreal, as massive horse-shoe-shaped bulges protruded from the bottoms of her arms, and her lats flared out, stretching the overburdened top further.

Tracy’s pussy practically gushed, and she nodded vigorously, now wanting nothing more than to become a huge muscular behemoth like this massive mountain of a girl-jock in front of her.

Shannon kept smiling as she brought her arms down and flexed into a most muscular. Tracy moaned audibly as Shannon’s traps rose toward her ears, her huge phone-book sized pecs bulged and contracted together into a mass of writhing striations and veins, her huge biceps digging into the sides of them, her top looking ready to burst.

She finally, mercifully, released her flex. “Not without a little help,” Shannon said nonchalantly.

“Help?” Tracy squeaked.

“Chemical assistance,” Shannon said, still smiling, then flexing up a single bicep. She stared at it, saying, “I found out that I could grow only so much before running into the limitations of my biology.”

She turned to look at Tracy with her piercing blue eyes, “So I changed it.”

“You.. changed it…” Tracy stammered.

“Yes,” Shannon replied. “First, with chemicals, but that only got me so far. After that, I began experimenting.”

“Experimenting?”

“Yes. I studied biology in college, and then went on to specialize in DNA and retro-viruses,” Shannon said matter-of-factly.

Tracy’s eyebrows went up. “Wow, so you’re really smart?”

Shannon shrugged, the simple act sending a cascade of striations across her musculature that had Tracy practically drooling.

“Sure, I guess,” Shannon said. “But the whole thing was for a purpose- to overcome my limitations. To become more,” Shannon said with a flex of her pecs and a fire in her eyes.

“More?” Tracy asked.

“More than human,” Shannon finished, smiling. “I came up with a retro-virus that changed my DNA. It gave me the ability to keep growing, to become the muscle hunk you see in front of you.”

Tracy blinked, her mind racing at the possibilities. She felt a warmth in her loins, thrilled with the idea that she could have stacked, sexy muscles like these.

Shannon smiled, recognizing in Tracy’s eyes the same desire she had had before she grew into the musclehead mutant she was now. She decided she would offer this gift to Tracy, and in a way that would bring them both pleasure.