The next transformation happened faster than Jen expected this time, as as she was pushed by her classmate down the hall she felt her body begin to change. The change in the color of her rubber body didn't change much when it went back to being skin, she also felt all the contents inside her being divided into two large compartments. Then an extension grew from the point where her teacher had tied a knot in it, with her losing her senses of sight and hearing for a few seconds as they moved to the tip of the new extension of her body.
The girl pushing her walked around her, standing in front of her and saying "That's cool Jen, why would you be that you turned into a giant dick? I really always wanted to try something, hope you don't mind." and took her clothes off
Jen knew now that she had turned into a giant disembodied cock and her eyes were on her tip.
The girl then, without any care, stopped in front of Jen's tip and simply stuck one arm in her urethra, followed by the other before opening it. She then poked her head inside before starting to pull the rest of her body, then slipping all the way into her balls.
Jen, who knew the girl's height and by how much she bulged inside her shaft deduced that she was at least 12 feet long, but didn't have time to think about it as the girl started to swim in the fuck inside her balls and , with the movement, stimulating her from the inside. She was torn now, as she partly wanted to stop everything and just go back to normal, but at the same time she wanted to come and get all the cum in her balls out, which she believed was instinctive because she was a dick at the moment.
The girl was swimming for a few minutes inside Jen's balls, so long that she was already late for her next class, but that's what it took for Jen to come and all the shit that the teacher had deposited inside her before, gushed to it had been with such force and quantity that it formed a small current in the corridor in front of her, which broke the girl's fall as she was ejaculated too.
Jen thought it was over when her orgasm ended, but she felt that her balls had started to fill up again pretty quickly, and the girl also seemed to still want more, because he put himself in front of her, pulling her tip down and trying to get Jen to enter her pussy.
The cock girl was confident she wouldn't fit, but remembered that the girl hadn't turned yet, at least not as far as she could see, until the girl's pussy stretched impossibly, but enough for her to get in, the which was more surprising because somehow the girl managed to make her stay in one piece, with the exception of her balls.
The girl's body had become extremely elastic, stretching so that Jen could fit inside her and, she had also acquired internal muscles that allowed her to stimulate the other even without pulling her out, doing this until she came one more time.
Jen, with another orgasm, deposited a huge amount of cum inside the girl before finally feeling satisfied. This time her balls, reduced to the size of yoga balls, didn't produce more cum at the moment. She also got out of the girl by backing up to four feet when she went limp. Assessing the damage she saw the hallway floor mostly covered in a thick layer of cum, and the girl getting up to slow down to the next class, which they were already so late for.
The girl surprisingly stood up, which seemed impossible as her body had turned into practically a perfect sphere the size of an elephant, if not bigger, only with legs, arms and head. it must have been very heavy and yet it moved with extreme naturalness.
"Thanks Jen, now let's continue on our way to the next class." the girl said, picking up Jen and heading to the classroom, not bothering to get dressed, as she knew her clothes would no longer fit her.