The first victim of Mikey's sticky notes was the father of Jenny, a classmate of his who lived a few blocks down the street. Coming home from work, he found a Post-it stuck to the front door, and began to read it aloud. "I wish," he read, "that I would swap genitals with my counterpart of the opposite sex in our family, and that our new genitals would adjust to match our bodies' ages, and that our whole family would remember reality as it was before the wish, and that I would develop as if I had my original genitals, and that my counterpart would develop as if they had their original genitals."
He stared at the note for a moment. "Disgusting," he muttered. "Who would put garbage like this on our door?" He felt strangely compelled to destroy the note, although he would have anyway, and tore at it angrily. Only the bottom part, with the last clause on it, came off, and he peeled the rest off, heading inside and tossing it in the garbage can. He headed up to his home office to finish a few projects, asvyet unaware that he now had his wife's reproductive organs and she had his, age-adjusted for their new bodies, although they only differed by a couple of years.
A little later, Jenny got home from school. She was eight years old, and got along fairly well with her brother Benny, who was thirteen and just starting puberty. She plunked down her backpack and pulled out some junk papers to throw away. She popped open the garbage can lid, and the note cught her eye. She pulled it out, dumping her papers in afterwards, and read it. "I wish," she said, "that I would swap genitals with my counterpart of the opposite sex in our family, and that our new genitals would adjust to match our bodies' ages, and that our whole family would remember reality as it was before the wish, and that I would develop as if I had my original genitals."
Jenny didn't even know what "genitals" meant, so the note didn't make much sense to her. Shrugging, she took the note over to the stove, turned on the burner, and set the paper on fire, reducing it to ash. After cleaning up the remains, she went up to her room to play, not yet aware that she had the eight-year-old boy's penis that used to belong to Benny, or that he had the thirteen-year-old girl's vagina that used to be hers.