You are awoken by a strange voice in your head. "You have been blessed with a curious and perverted ability. You can to swap or morph your body parts with others. You can choose for reality to notice your changes or not. Have fun!"
"Wow, what a strange dream." You think as your rub your head and climb out of bed. "That would be an awesome power to have if that dream was true. Maybe I should try just to be safe."
You focus you mind really hard on your penis you think about it being a vagina and how its always been one you feel a tingling down there and you reach for you penis but a vagina is there instead, you take a second to rub your clit till you cum, you change your vagina back into a penis