Kira pressed the gender button, but the way she had the remote angled she hit herself. Her shorts got more baggier, especially in the crotch along with her t-shirt getting a little thicker. She felt at her crotch at the unfamiliar sensation and wondered out loud "What is this?"
Joe said "Your a guy now... That's your pee pee. Now hit me with that option now!"
Kira said "Ooo I heard you can pee standing up with one of these. Give me a second!" and the little boy ran off to the bathroom with the remote. Soon though the little boy realized that the toilet in Joe's home was a little too big for him to just stand and take a piss. Kira thought to himself "Too big! I really wanted to try peeing standing up like a boy, but this is just an adult toilet... Wait this had an age option on it." Kira aimed the remote at himself again and pressed the age + button and had a small surge of growth as he turned into a 6 year old. Then Kira pressed it again and again. slowly growing through spurts, and occasionally his plain shorts and t-shirt changed slightly as he got older. At the fifth press the 10 year old was old enough to piss in the toilet, but was continuing to grow older as he thought it was interesting. A few more presses and something started to feel much different in Kira. With puberty starting Kira noticed his groin was starting to feel weird and pulled open his shorts and then hit the age + button again and saw that his pee pee had grown a lot more and a lot of hair was growing. Looking at himself in the mirror Kira saw that he was getting hairier in a lot of places. A couple of surges later and the 18 year old felt good enough to stop aging himself to more than 3x his original age. He took his little trial piss, flushed the toilet, washed his hands, and when he came out he saw a little girl in her little dress sitting next to the door.
Joe exclaimed "You've had your fun, turn me back into a boy!"