Jen turned to see who she had bumped into, and saw James, one of Kyle's friends.
"Watch where your going pencil neck!" Jen barked at him. Unknown to Jen, Kyle had set this all up, James was a tall and very lanky guy, but he was hiding a major secret, Kyle had known for years but James was very good at hiding it. James had a giant cock, it was ten inches stiff, and James was somewhat feminine, bearing slightly wider hips than most guys, James just walked away, not knowing that he had unwittingly started the curse for Jen.
Jen for her part started walking down the hall towards the gym, where she would meet the squad before class, she felt something a little off as she started changing, her legs growing longer. Her skirt started feeling tight and she looked down, nearly letting out a shriek she saw the ground was slowly getting farther away, and remembered the curse, Jen panicked, nearly cracking her head on the door frame to the gym as she heard her clothes rip she got into the gym and stared at the changes happening below.
The curse for it's part decided to go above Kyle's stated height for her as she passed seven feet tall, instead going with the three times the features part for all of the changes, James had stood at seven feet tall already. Jen passed ten feet and continued growing, finally stopping at an astounding thirteen feet all from her waist down. her features changed, legs thinning out, her hips thinned slightly leaving her slightly feminine, but still a guy.
James wasn't a hair man, in fact, he was in the habit of shaving and waxing his legs, he just didn't like the hair, so Jen didn't grow any as she felt her pussy start to turn inside out. Jen started to panic, wanting to move but found she couldn't as her clit started expanding a growing outward, his new cock growing in, stiffing as it grew standing straight out in front of him as is reached it's final length of thirty inches, his balls expanded in lurching spurts, as they swell growing to the size of soccer balls, the growing had stopped, and Jen stood there staring at what her lower half had become.
She tried to move but her body didn't respond, as her upper half started sinking in, Jen screamed clawing at the hips, trying to stop from descending into her new male form, unable to stop the sinking she screamed in horror as her head finally sunk into her new self. He stood there, unable to see he tried to sit down and fell on his ass as the new senses came in one by one. He began to see, but from just above his crotch, his view blocked somewhat by the stiff cock in front of him, hearing returned with the added weirdness of being able to hear the blood flowing through his erection, smell and speech came last as the giant legs moaned with sadness and lust as he tried to figure out what to do about his cock.
Jen, if that was his name anymore finally decided that he needed to leave school, but how, the door weren't made for a pair of thirteen foot tall legs, he got up, suddenly realizing his size and ran toward the fire exit, his cock bouncing around in front of him, he got to the door and then....