Alex 3

Some weeks later, Ken caught Alex coming out of the bathroom in just a towel. Her biceps popped from her arms without even trying, encrusted with a blue vein across the top. She had protruding trap muscles and the definition in her shoulders. Ken’s mouth dropped in surprise, and Alex smiled seductively.

“Not bad for a girl, huh?” she said. Then she flexed up one arm. Her bicep looked huge and hard. Her triceps popped. Ken could feel his dick starting to get hard, and that made him really uncomfortable, and he blushed.

Alex laughed. “I always knew you had a thing for muscular girls!” she said, picking up almost instantly on his arousal.

“I don’t know what you’re talking about!” Ken retorted awkwardly and tried to shove my way past her into the bathroom to hide behind a locked door.

But when he tried to push her aside, it was a lot harder than he expected. She hardly moved. Her smile broadened.

“Oh sure…” she said with a smirk. Then she moved out of the way and casually let the towel drop. “Ooops…” she said, bending slowly to pick it up.

Ken’s eyes widened as he took in the sight of her rippling six pack abs, defined obliques, and instead of her small pert breasts, two defined pecs. She slowly gathered her towel then sauntered back to her room, totally naked. Ken watched the defined muscles in her back and the definition in her thick ass until she stopped in front of her door, turned, and winked at me.

“Have fun in there,” she quipped before disappearing into her room. Ken’s dick was harder than it had ever been in his life. He rushed into the bathroom, locked the door, and stroked himself with mad energy. He ejaculated so quickly and without thinking, leaving a big mess to clean up.

He was embarrassed and humiliated, being turned on by his own sister like that. But those huge, thick muscles, vibrating with energy and power… he didn’t realize how sexy that could be.

The next morning, at breakfast, Alex was consuming a plate full of eggs, bacon, and sausage when Ken sat down. Alex was wearing a tight sports bra that showed off her thick shoulders, flaring traps, and built abs. She looked over at Ken, smiled, and said, “Did you enjoy the show last night?”

Ken’s face flushed, then he forced a sour expression and said, “No! Gross, Alex! You’re my sister!”

Alex chuckled and shoved a fork full of protein into her mouth.

“Sure, Bro, sure,” she said with a sarcastic tone. Sam’s face flushed deeper.

“It’s ok, bro,” Alex said conspiratorially. “In fact, I think it’s cool.”

“Cool?” Ken said incredulously. “What the fuck?”

Alex shrugged, sending a cascade of rippling strations down her neck, traps, and shoulders. “I like it.”

“You like what?” Ken said, almost breathless.

“I like showing off!” she said. She looked him square in the eyes. Then she puffed up her chest and flexed her pecs. They bulged with rippling sinew, threatening to pop the stitches on her sports bra.

“I like turning you on with my muscles!” she said in her best come fuck me voice.

Ken’s eyes went wide. His dick immediately got hard, and he covered it with his hands.

“Don’t worry,” Alex said with a smirk. “It can be our little secret.”

Ken blinked. “Uh… okay.”

“Here,” she said. “How about a little inspiration?” Then she did a double bicep flex. Her biceps exploded with beef. Thick veins engorged as horseshoe-shaped triceps bulged downward and bulbous masses of biceps expanded upward. Thick blue veins crawled up the top of each muscular mound. Ken whimpered as his cock bucked, and Alex chuckled.

“Go ahead, bro,” Alex whispered. “Go lock yourself in the bathroom and beat that cock!”

Ken got up and practically ran upstairs while Alex just laughed. She liked where this was heading.