Nervously Jon looked down at his body and to his relief he was still a boy. In relif he patted himself down to make sure everything was still the same but something felt off, his crotch. Quickly pulling down his jeans and boxers he was shocked to see a vagina between his legs.
"Well I didn't even consider that." Jon said before deciding what to do. He made sure he still held the stone before saying "I wish to know why my last wish changed my biological sex instead of my gender."
Insantly he knew, he knew the stine had granted his wish through the path of least resistance and changing biological sexes ran into fewer conflicts with past wishes then genders. Pulling up his pants he made his next wish.