Dominated by the overwhelming sensations of an ultra-accelerated puberty, Carol started to flex her new amazing body.

She put her arms under her head and started to flex her new tree-hunk thighs. Amanda stood quiet, studying carefully with the eyes every detail of the new fibers that now formed her cousin's legs. Excited with the vision, her body's newest organ started to stiffen slowly again. Not paying attention for the other girl, Carol was very excited too, so that she started to caress her thighs with her hands and felt very delighted in finding out that they were harder than any metal or stone thing that she touched before.

After some minutes of exploring on her lower body, Carol slowly raised her hands across her stomach, sliding her fingers between her new brick abs, then rising to her ballooned boobs and pecs. Lastly, she took a deep breath and brought up a double-biceps pose. The two balls of flesh started to rise, but didn't seem to stop. Amanda was shacking with excitement, while her male genital, mimicking to other girl's muscles, grew to near its marvelous length of ten inches, with no sign of stopping. Carol's biceps rose more and more, while snake-like veins popped out like crazy over the expanding flesh. Finally reaching a peak of 32 and a half inches each, the muscles ceased their advance upward. The girl's arm skin was so stretched that it shone with some reflex, making it look like the biceps were glowing with some kind of 'inner light'.

That vision was too much for Amanda, who was shaking even more with amazement. She was so excited that her female cock started to throb to the point of surpassing its previous length and girth, reaching almost 15 inches long and 3 inches wide. She moaned with hypnotic pleasure, while some tablespoons of pre-cum slowly ran out of her member tip. Unable to hold it anymore, she started to slowly caress her 'anaconda'.

When Carol heard Amanda's moan, she came back to her senses and quickly lowered her arms, paying attention once again on her cousin, which had just resumed her masturbatory activity. Then, she remembered and told Amanda, with a nice deep voice:

- Amanda, you've more than fulfilled your promise of giving me the muscles that I've asked for, but I remember that while I was still a child I've asked for another improvement too. Give me a well endowed phallus, so I can be a hermaphrodite like you are now.

Amanda came out of the trance of her self pleasure, impressed on how Carol had matured not only in body, but her mind was now that of a full-grown and intelligent woman. While she was still thinking what to say, Carol ran and took the gun from her left hand, while her right was still occupied with her penis. With her other hand free now, she focused entirely on her self-pleasure and watched silently what the other was about to do.

Carol studied the gun for some minutes, until she found the dial that said 'MALE · FEMALE · BOTH' and adjusted it to 'Both', obviously. Then she configured the to the maximum potency that she could from what she discovered analyzing the gun and zapped herself in her own crotch. Soon, three plumps started to grow right above Carol's clit. Quickly, they exploded to one mammoth penis and two baseball sized testicles.

Amanda couldn't shut her dry mouth. Carol moaned with pleasure while her new gigantic snake rose more and more, finally reaching the gigantic length of 22 inches hard and 4 and a half wide, with many huge bulging veins covering its glory. Her testicles evolved to the size of small grapefruits. She laughed of excitement and pleasure. Once again, she turned to Amanda, which was smiling and still stroking herself gently.

- Wow. You look really awesome, Carol!
- Yes. Thank you.

Carol started to think what to do next.