The passenger door of the car swung opened and Gabby stepped out onto the pavement in her bright pink sandals. She was dressed in nothing but a bright white bikini which accentuated her curvy body. She was Samantha's best friend, and the two women were supposed to have a beach day after a quick visit with Samantha's boyfriend Ben. Samantha had mentioned in passing Ben had two single and attractive roommates, so Gabby had purposely chosen to wear her skimpiest bikini to have her huge tits fully on display; she was on the hunt for a new man. She gave her reflection a quick glance in the car's side mirror, making sure her cherry red lipstick wasn't smeared and that her long blonde hair was neatly pulled back into a ponytail.
Gabby started to walk towards the house, wondering what was taking Samantha so long. As she approached, she noticed that two attractive muscular men wearing matching red speedos were standing in the open doorway of the home. One of the men was on his knees in front of the other man, giving him a blow job. Gabby let out an involuntary gasp in surprise, which caught the attention of the two men. Gabby blushed red with embarrassment as the man on his knees stood up and spun around to face her. The man that had been receiving the blow job continued to lean up against the doorway and jerk off.
"I'm sorry, I didn't mean to interrupt," Gabby stammered, trying to avert her eyes, "I was just looking for my friend."
"Don't you recognize me, Gabby?" The blonde hunk grinned as he approached her.
Gabby's pencil thin eyebrows furrowed in confusion. "Samantha?" She gasped. The huge, muscular jock in front of her didn't resemble her friend in the slightest.
"It's actually Sam, now," The man replied with a cocky smirk.
"What...how?" Gabby asked, taking a step away from Sam in confusion.
"Here, I'll show you," Sam whispered seductively, pulling Gabby towards him and kissing her.
Gabby instinctively tried to pull back, but Sam was much stronger. After a moment she stopped resisting and started kissing Sam back, running her tongue along Sam's tongue piercing. As they kissed, Gabby started to grow taller, going from a height of 5' to nearly 6' in a matter of seconds so she was now almost eye to eye with Sam. Sam reached his hand down and groped Gabby's breasts through her bikini top as they began to shrink. Gabby had been a Size D, but her breasts were now barely a Size B as they continued to recede into her chest. Gabby's shoulders broadened, causing her chest to widen as well and tearing off her bikini top. Her now Size A boobs continued to shrink away until they were fully absorbed into a pair of meaty, muscular pectorals.
Sam slid his hand down Gabby's stomach, tracing the outline of her newly formed 6 pack of abs. Sam began to rub Gabby's clit through her bikini bottom, causing Gabby to moan in pleasure. As he continued to rub it, Gabby's clit began to swell and grow, turning into a large thick cock. Gabby's white bikini bottom changed colour to a fiery red as the material changed, becoming a tight red speedo. Two large balls dropped out of Gabby's pussy before it sealed itself shut, leaving Gabby now with entirely male genitalia.
Sam continued to stroke Gabby's cock through her speedo as the two continued to kiss. Gabby's bright orange skin, fresh from a tanning bed session, darkened to a light brown. Gabby's previously slender legs bulked up with muscle, her thighs becoming thick tree trunks of definition. The sandals Gabby had been wearing her torn to shreds as her feet doubled in size. Her slim arms also erupted with muscle, large veins bulging out of her newly formed biceps and triceps. The skin on Gabby's left arm darkened, turning into a sleeve tattoo of a wolf howling at a full moon. A smaller tribal armband tattoo formed on her right arm.
Sam felt his lips tickled as a neat, dark black beard grew onto Gabby's face and chin. Her lips thinned out as her cherry red lipstick faded away while her bright emerald blue eyes changed to a dark chocolate brown, almost appearing black. Gabby's eyebrows thickened and darkened as a silver spiked piercing formed in her left eyebrow. Her long hair retracted into her scalp and darkened, leaving her with a jet black buzz cut as her chin grew more squared, taking on a more muscular appearance.
Gabe smiled at Sam, reaching a hand down and stroking his dick through his speedo. "Thanks, stud," He laughed, his new deeper voice having the hint of a Spanish accent. The two men walked back towards the house, approaching Ben who had been jerking himself off throughout the entirety of Gabe's changes.
"Looking good, Gabe," Ben panted between strokes.
Gabe grinned and knelt down in front of Ben, sliding the tip of his cock into his mouth. As Gabe sucked Ben off, Sam pulled down his own speedo and started jerking off his massive boner.
Jason and Andrew stepped outside of the house onto the doorway to join the rest of the gay men on the house's porch. Both Jason and Andrew were completely naked with rock hard dicks. "Should we bring the party inside, gentlemen?" Jason asked with a wink, reaching over and stroking Sam's cock.