Relationship Change: Father/Daughter

"You can't tell, can you?" asked Karyn. "I didn't change anything about you physically, so you don't have to worry about your penis being taken away." Jon looked in the mirror. He still saw the same sixteen year old boy, wearing the same clothing. He turned to his daughter and said, "All right, young lady. What did you change? We may be the same age, but I'm still your father and you owe me that much." Karyn giggled. She wondered how reality had been changed for Jon to be the father of a teenage girl who was conveniently the same age as he was.