The casual comment that shaped the world

Jon had to close his eyes as the stone in his pocket grew warm. For over ten seconds he felt it, and heard everyone in the class reacting to the feeling as well. Finally, he was able to look about the room to see everyone else closing their eyes as well. Everyone began opening them after a while, all curious about what had happened, getting out of their seats from the excitement and confusion.
Thats when Jon saw it. And his blood ran cold.
No one thought the way he walked now was strange at all, after all, thats how a young boy should walk as he's going through puberty. It all dawned on Jon as the effects of his casual remark on the stone was changing nearly everything, and every one that he saw!
Every boy in the class now had the same gentle curves to ther behinds and, Jon guessed, the same female plumbing as well! Bt that wasn't all! Since it now seems to be natural for boys to be this way, their bodies have grown up with different hormones during puberty, and therefore, have different bodies, interests, and even personalities!
The clothes, that was the first thing he noticed. Ed Morrow, who was sitting next to him in his denim jacket and jeans a minute ago now seemed shorter, much more petite, and had on a loose fitting pair of capri pants and a stylish cashmere sweater that clung to his narrow waisted torso. His small breasts were obvious, as the neckline was rather open, and one strap of his white bra was showing! The unkempt hair he normally covered with a baseball cap was now neatly combed, colored auburn, and drawn back in a long pony-tail!
On his other side, Jaimie Harris, whom he once teased about how small she was, loomed a few inches above him now. Her tiny arms were well toned, and her normal blouse and skirt were now a pair of black jeans and a tee shirt. Her breasts were smaller, and didn't seem to have a bra concealing them beneath.
All around the room, things seemed different. Everyone calmed down and got back to class in a few moments though. No one but Jon seemed to notice! Thus was the power of the wish!
Ms. Hedstrom, who looked much larger and more athletic herself, called the class to order in a huskier voice than she had before. "Now class, lets calm down, whatever it is, its over now. Boys, please, everything is fine now, no reason to panic. Jennifer, Matthew looks like he's crying, could you help him get to the counsellor's office? Come right back afterward.
John sat down noticing he had become more feminine as well. He had breasts and was wearing a bra. Though he didn't feel taller, he noticed he had heels on, and his skin felt so very smooth! His nails had polish on them, and he thought he tasted lipstick!
"Oh my god," he thought, "what have I done?!?"