“Oooh. It’s been awhile since we’ve been in one of these,” said John, as sweat already started coming from his skin.
“It is!”, said Sharon. “…Julie, is something wrong?”
“No, just my swimsuit getting itchy,” Julie replied. The young teen girl tugged at the top straps of her one piece swimsuit, and pulled it off her shoulder; before fully pulling them down her torso. On her back, patches of golden fur were sprouting, and began spreading like moss all over her body. Further below, her tailbone was extending out into the start of a proper tail, with a tuff of hair growing on the very end.
As Julie completely stripped off her swimsuit, none of the family members gave any weird glances at her sweating nakedness. In fact, across the bench, Derrick was casually pulling off his swim shorts too; letting his teenage manhood flop freely with nary a glance from anyone else. “How long do we stay here?”, he asked.
“Forever? Haha…”, his father joked. John leaned back in relaxation while his skin started taking on a hard, scaly texture that spread across his body. A similar texture came to Derrick’s skin as well, but instead of the light red hue that was covering his father, his skin was showing a tinge of green.
Between John and Julie, who was finding it harder to sit upright with her lengthening spine and changing legs, Sharon’s two-piece swim wear was sagging as her body started shrinking. She was growing a small tail above her butt as well, and it was covered with the same dark hair that was sprouting around her lower body like fast-growing grass.
Like Julie, her legs were also bending themselves into animalistic hind legs. Unlike her daughter, whose feet were growing pads underneath and resembled the hind paws of a large cat, Sharon had each feet melding into a large black stump that was hard as nails.
Sharon pulled away her bikini as her clitoris extended out into a strange swelling nub. Against any common sense, Sharon rubbed her changing privates and moaned, while her vaginal lips wrapped around the growing appendage like a sheath.
John gave a chuckle at his shrinking wife’s pleasured moans, and stripped off his own shorts as his privates went through swelling of its own. His erect shaft was taking on a pointier, jagged quality, and started going as red as an apple while his testicles grew into a larger, scalier sack. Behind his back, blunt spikes began growing out along his spine, starting with the top of his head, and all the way down to the end of his own growing tail.
Derrick’s privates were looking similarly draconic as his father, though there was another small nub growing right next to his current dick, and it quickly swelled to the same size as his original shaft. Derrick grabbed hold of both his two new penises, and moaned from the pleasant sensations.
He didn’t notice his voice had gotten strangely more high pitched, and started sounding a bit more like her sister by the second. The vapor-clad hair on Derrick’s head began lengthening out past his shoulders, while his facial features softened and appeared more feminine, complete with a pair of lush teenage lips that not even his mother could match in girlishness (especially with her current changes).
Derrick’s scaly chest began puffing out into very feminine breasts, complete with perky nipples. Derrick now looked like a hot 15-year old girl; one who looked reptilian and possessed two dicks.
Derrick’s sister was going through her last changes. With her larger body, Julie now resorted to lying down on the tiled floor with her new quadrupedal lion limbs and paws. The sweaty golden fur from her body had stopped right below her neck, and below on her belly, she now sported three pairs of new nipples under her original budding breasts. Julie, the 14 year old female sphinx, casually groomed her new paw with her tongue as her tail waved above her changed feline vagina.
Next to her, Sharon had stopped shrinking, and her eye level now didn’t even meet John’s chest (though John was also growing taller through all this). Her breasts have deflated into small masculine pecs that were coated with fuzz. Though she kept her long hair, it was shriveled and matched the fur on her legs and thighs, and her face was now more angular with a rough little beard hanging from her chin. Two goat horns now poked out from the top of the new male’s head, and his ears had lengthened into those of a goat. Sharon’s ears twitched as he continued happily masturbating his new satyr penis, while his tail wagged about on his rear.
John’s entire body was now covered in scales, and he was now the tallest of the whole family. Though even with his longer neck and limbs, it wasn’t enough for him to accidentally hit the ceiling.
As John adjusted himself so his fully grown tail could lay out from his side, John’s toes and fingers lengthened out with their nails growing into sharp claws. Two appendages on each hand and foot merged into one, leaving John with a total of eight new fingers and eight toes.
Above his tall neck, John’s ears had disappeared, though he still found himself with a sense of hearing. John had grown horns of his own atop his head the same time as Sharon, though unlike his wife's they were short and pointed outward. Like putty, John's face pushed itself out into the snout of a dragon. The new anthro-dragon bared his new predatory teeth with menace, only to stretch his new mouth wide in a relaxed yawn with his snake-like tongue flicking out.
To his left, as Derrick continued masturbating as a reptilian herm girl, his (or her) feet started melting into formless stumps while his legs stuck together, though still leaving room for her two penises to stick out. The legs melted into one single trunk with a slightly rounded tip, and it grew longer and longer below Derrick, eventually leaving Derrick with the bottom half of a large green snake.
Derrick and her former mother Sharon both cried out as they ejaculated out of their new privates together, and semen spurted from their penises. While Derrick’s seed hit the tiled floor, some of Sharon’s semen accidentally splashed onto Julie, who laughed as her mother’s (or fathers?) fluids hit her still human-like face.
By the time their orgasm died down, Derrick and Sharon had suddenly forgotten their past names and genders, and only thought of themselves as ‘Derra’ and ‘Sean’.
No one in the Anderson family noticed anything had changed, or that they’ve all become mythical Greek creatures.