Lily pt 3

A couple of months went by and Lily kept lifting and growing seemingly right before Sam’s eyes. He was now masturbating daily, twice a day, sometimes more, inspired by his sister’s incredibly erotic muscles. For her part, Lily only encouraged it, wearing skimpy and tight outfits, walking around in her underwear, and doing anything she could to show off her muscles. She would even drop comments, telling Sam, “here’s something for the spank bank” while giving him a bloated side chest pose, or “go stroke it to this!,” while doing a massive meat-wing lat spread.

One day, while their mother was at work, Lily called Sam into her room. She was grunting, curling 85 lb dumbells in each hand, completely topless, wearing nothing but tight white boy-briefs soaked with sweat. Sam’s eyes nearly burst out of his head at seeing Lily’s naked chest, phone-book sized pecs with no signs of breast tissue left. With each curl those meat-sacks would bloat and ripple with striations. Veins crawled all over her neck, traps, and back. She was a freak, a total musclehead, and it instantly made him hard as a rock.

“Got something to show you bro,” Lily said, grunting as she hefted the weights one more time. “You know I’ve been growing, getting huger by the day,” she said arrogantly, hefting the weights again and again.

“What you don’t know,” she continued, “is that my muscles aren’t the only thing that’s growing” she said, dropping the weights with a clash. She turned, fully facing me, and put her balled fists on her hips. Her obliques jutted out and her lats flared, nearly filling the space between her elbow and her rib cage with meat. Her chest puffed out, thick pecs, veins and striations bulging with each breath. Her abdominal wall was a huge stack of bricks and looked carved from living granite.

Then my eyes went downward, to her briefs, where something was stretching the fabric over the area of her crotch. My eyes went wide, taking notice of the thick, hose-like veins traveling from her legs and abs underneath the thin cotton briefs. 

Lily chuckled. “Oh yeah, baby, I’ve been juicing so much, it’s made me bigger all over!” she cried, bucking her hips. Stitches in the briefs tore as the mound at her crotch swelled suddenly.

Lily licked her lips and looked at herself in the full-length mirror by her door. Her hands grasped her rock-hard pecs and squeezed, and she flexed down her abs, causing a cascade of muscular sinew to travel down toward her crotch. It bulged bigger and tears started forming along the sides of her briefs.

“I’m so fucking JACKED!” Lily rasped. “It’s got me so fucking HORNY!” she cried, bucking her hips again. Her briefs could take no more and they tore off. A thick, gnarled appendage sprang out and slapped against her abs. Sam’s mouth hung open in shock.

Lily turned to me and grasped what could only be described as a massive she-cock. She stroked it, saying, “What do you think?”

Sam was speechless. But his cock said all that she wanted to hear as it stretched the front of my shorts to tented obscenity. Lily smiled and said, “I knew you’d like it!”

Totally naked, she stalked toward him, a lewd smile forming on her lips. She tore his shirt in half, ripping it from his body, then did the same for his shorts. Sam’s hard on sprang out, standing at attention. Lily bucked her hips, thrusting her girl-cock against his.. It felt like electric shocks when their cocks touched. Sam marveled at how her girl cock seemed bigger, thicker, beefier than his. How was that possible?

“It’s the steroids,” Lily rasped, “Man hormones, making me more massive, more muscular, and more manly!”

I was confused and more turned on than I’d ever been in my life. 

“Feel me up, bro,” Lily said, grasping his hands and placing them on her striated glutes as she crushed his upper body into her thick pecs and abs. She felt like she was made of warm stone, and Sam could feel her lats pushing against his arms, making it hard to keep his hands on her thick glutes. 

“I’m so FUCKING HUGE!” she said with a mighty flex of her pecs that shoved him backward. Lily chuckled. “And I’m gonna get even huger!” she rasped.

She strode forward again, backing Sam up against the wall, as she leaned in close to his ear. “You know what else these steroids do?” she raspd into Sam’s ear.

“They make me fucking HORNY!” she cried, and bucked her hips, smashing her girl cock into his. Then she slowly slid her girl cock lower, underneath his ball sack. She leaned in close to his ear and said, “I know you like it.” I could feel the thick head of her cock slide toward my asshole. Sam moaned.

“Oh you like it!” she said, licking the side of Sam’s face as she bucked her hips, penetrating his ass.

“Ungh!” she grunted, “so fucking TIGHT!” she said as she bucked again, fucking Sam’s asshole as Sam moaned in pleasure and pain. 

“Oh yeah!” she roared, pistoning her hips, ramming Sam into the wall. “I’m so fucking JACKED! So fucking HORNY!” she cried, jacking hammering Sam’s ass with her girl cock.

“And I’m gonna get bigger!” she cried, “Gonna get HORNIER!” Gonna get FREAKIER!” she screamed, her eyes bulging wide as thick veins bloated up across her traps, her neck, even her face!

“You’re gonna be my BITCH!” she cried, pistoning faster, “and I’m gonna fuck you, again and again, WHENEVER I WANT, WHICH IS ALL THE FUCKING TIME!”

“Ungh” Sam moaned, “you’re so fucking sexy!”

“I’M A HORNY MUSCLE BULL!” she cried, 

“YOU’RE A GOD DAMNED FREAK!!” Sam said, carried away with her lust.

“THAT’S RIGHT, BITCH, I”M A FUCKING FREAK!! AND I’M GONNA GET FREAKIER!” Lily screamed.

“DO IT! GET HUGE! GET MASSIVE!” Sam screamed

“OH FUCK YEAH! I’M GONNA BLOW UP!  BIGGER THAN A BODYBUILDER, BIGGER THAN ANY MAN! BIGGER AND BIGGER AND BIGGER!” she cried, lost in her imagination of expanding muscles. “OH FUCK,  I’M GONNA FUCKING BLOW!”

She lurched back and flexed down into a most muscular pose, moaning loudly. Her eyes rolled back into her had as her traps flared, her pecs surged, and her arms bloated with ridiculous muscle. Her girl-cock bucked and blasted cum, spraying Sam’s chest with copious amounts of fluid.