Jon waddled his heavy body over to the door. As best as he could manage, he reached his arm across his abundant chest to cover both his large, sensitive nipples with a thick elbow and dainty, manicured fingers. His huge breasts overspilled the cradle he made, but he managed to maintain his feminine modesty by the narrowest of margins. With his free arm, he sheepishly opened the door for his sister.
There was Zoe, looking the same as she ever did. Whatever had happened to him, Jon thought, had it happened to him alone?
Zoe took one look at her brother, now with the smooth skin and round figure of an voluptuously overweight woman, and burst out with astonished laughter.
"Oh my gosh Jon," she covered her gleeful grin. "You've really done it now!"
"D-done what?" Jon stammered, somewhat surprised that his sister noticed some change in him - the stone didn't usually work that way.
"You became a man, big brother! And a whole lot of woman too," Zoe grinned. "I heard you come home late last night, but I never would have imagined you finally had sex."
"What??" That wasn't how Jon remembered the previous night. And he was still a virgin... he was pretty sure he'd remember having sex for the first time! "You can tell I had sex? How?"
"Because your body changed to match your female partner, silly," Zoe smirked. "And you still had your virgin boy figure yesterday. It's so easy to tell with boys..."
"I-I gotta go," Jon said and quickly waddled back to his bedroom. As he retreated, Jon heard Zoe tease him with a wolf-whistle and a backhanded compliment about his enormous ass.
He had to figure out just what he'd done!
