Humans get to change their genitals however they want

Spinel's eyes light up with a most intriguing idea. Humans not having any say in how their body works without spending money causes problems for some of them, right? And I bet some of them would love to try having a dick or a vagina for a day!

She grasps the pencil and scribbles into the notebook.

OLD RULE: Humans can shapeshift their genitals however they want.

As soon as she places the period, she gets a strange feeling, like the book working its "magic," whatever it uses to do... whatever it does.

As she looks around, she spots...