It is a pen

The fountain pen that was inside was ornate and beautiful. The intricate craftmanship almost made up for the fact that you were pretty sure that it could be bought on Amazon for far too much money, and it was probably going to leak almost constantly.

"I swear this is the real deal. If your body is attuned to the pen you can reshape reality with it. It is kind of weird since you can only modify existing text, but whenever you modify text the world shifts. I am not fully aware of its limits, but it is kinda like the Genie movie we saw last time, it tries to corrupt the wishes into something supremely naughty."

You tried to grasp the concept but it was honestly supremely weird. That could only mean that this was another one of those "Abby ideas" that would supposedly tap into some ancient mystical power beyond mortal comprehension. The gal could see your hesitation and she rolled her eyes. "FINE! Let me prove it to you then!" She rummaged through your room and found something that she could use. The blonde hippy girl found what she was looking for. A diary! You were pretty sure that Poppy was the one keeping that one. She highlighted a line on the page about you.

My new roommates are absolutely amazing. I am lucky that I am with a girl that is also a first-year student. Candy is super cute and I have already gotten to taste her pussy

With a flick of the pen, Abby added the word "Plumb" before pussy. When she did everything seemed to shift and change making it hard for you to breathe for a second. Instantly you felt the pressure between your legs starting to build. It was intense and the pleasure poured through you as your pussy became bigger and bigger.

The lips were sensitive to the touch, and your clit was firmly buried in the warm folds. However, the growth of your sex didn't seem to stop. It only seemed to pick up speed becoming fatter and thicker. It would be hard for you to close your legs at this point.

You gasped as bliss rushed through you, pleasure beyond anything that you have ever experienced, as your newly enlarged cunt jiggled and bounced. It was incredibly jiggly and beyond any reasonable size. "See! The pen can twist pretty much anything or anyone!" You looked at Abby a bit confused. This was just another one of those ideas that she has. She would write down something obviously true and always has been. You gave her a look, and Abby pinched the bridge of her nose.

You could remember always having trouble finding panties that fit. Often the fabric would get swallowed up by your massive lips, and even wearing pants seems completely impossible.

You could remember it so vividly as if it had happened yesterday. How you got teased with your puffy snatch, and how your Mom had needed to comfort you. You could remember how this school had ensured that your needy slit was shown off on the first day, and how your roomies had played with the puffy labia, making them jiggle and bounce from kisses. Even taking time on who could make you jiggle the most. It was the first time you had felt really accepted.

"Yea, this was what I was afraid of. The thing is that people don't remember that the world has changed and I need some help to figure out how to use this thing. I can delete the last thing it wrote though, as long as it is within 24 hours." Abby turned the pen around, letting the dull jade piece at the top run over what she had just written. The text disappeared and once more the entire world started to shift. Your cunt shrunk, becoming normal.

You are about to scream with joy, and finally, you can become a normal human being, but then pleasure rushes through you and your body shudders. Your mind goes blank for a second as memories that seemed so incredibly vivid disappear. You have always had this pussy and it is nice and plump, but not overly big.

"Will you please help me with this thing?" Abby is almost begging at this point and you can't bring yourself to say no, even if this whole thing is just one of her out-there alternate science ideas.

The two of you discuss ideas on how to proceed until it is time to grab something to eat. You do so before heading back to your room for the evening.