"That stone there has the power to make a person turn into a rather... well endowed member of the opposite sex. It generally takes about 20 minutes for the change to happen and-" He turns around and notices you're already touching the the rock. "You shouldn't touch it..."
You look down and look at your body quickly changing into a girls body. After 5 minutes your hair is blonde and is down to your neck, your face has completely changed and your nipples feel really weird. At about 10 minutes your hair has grown down to your back, your lips have plumped up a bit and your breasts have started growing fast, already B cups.
15 minutes, 75% done resulted in your male parts clearly diminishing with a crevice taking it's place. Your chest had plumped up even more, reaching a DD cup. By the end it is obvious your are a girl, with a completely female body that is very well endowed, huge G cup breasts, a large and jiggly butt, thin waist and lean stomach, everything which said 'sex' in your brain.
You look down at your new outfit, as it seemed your clothing had changed along with you. Your innocent white button shirt had morphed into a white tanktop, with the straps just above your huge breasts and it hung tight to your new curves. Your jeans had become very, very short jean shorts which if they were any smaller, wouldn't be called shorts. Straps of a pink g-string showed clearly from the sides because of the midriff of your tanktop. To finish it off, your shoes had become pink flip flops which said 'sexy girl' on the inside.
"Umm, this is obviously not what I want to be, how do I change back?" You ask in your new girly tone.
"Well, you can't really. That stone has a limit to uses on a single person, you have to remain that way for 5 years."
"WHAAT! What will my friends and family say about this!?!"
"Don't worry, your family has changed to make it so you've always been this girl and they treat you as such."
"What about my job? I could never do that same work with this body!"
"Of course not, the stone automatically sets the users job to professional cheerleading!"
You nearly pass out thinking about what you're going to have to do from now on, tight tops, bras, bikini's, thongs, short skirts, it was all toomuch for you.