Jon had a hard time keeping up with Jill as she bounded up the stairs to her room. Not only was his former body equipped with longer legs, but he found that his whole balance was off in this new body. Sure, he was now in better shape than he was before (Jill always prided herself in keeping fit), but the shape itself was so different than he was used to. When he finally got to the bedroom (which he guessed would now be his) he saw his old body waiting for him, standing at the foot of the bed.
"Come on, Jon," he found it weird to hear his own voice chiding him, "You have to be at the mall in forty minutes!"
Jill flopped down onto the bed, quickly crossing one leg over the other in a flirty way Jon had often seen her do before.
"Ugh!" she exclaimed.
Jon rushed over to her. "Jill? Are you alright?" Panic filled his mind. Was there a side effect to this strange twist of fate? Would there be pain?
"My... your... balls..." she wheezed, "I... ugh... sat... wrong..."
Jon stifled a giggle. Of course, he thought, she'd have no idea how to sit as a guy. "Jill, you'll have to be a bit more careful in the future. That's going to hurt for a while. Why don't you try to stand up and walk it off a bit."
Jill struggled to her size eleven men's feet and staggered around the room. She held her legs open, as if she had just dismounted a horse.
"How do you guys handle these things?" Dispair sounded in her voice.
"Don't worry, you'll get the hang of it. Just remember, they're always there, and they'll always hurt. Just be careful." Jon crossed to the closet. "Now, think you'd be able to help me out here? I'm a little terrified about going to the mall with your friends. I don't know where to start!"
Jill took a deep breath, then waddled over to stand next to her brother (sister?). "Well, Jon, if you're going to be me, the biggest thing you have to remember is..."