"These vials can turn me into anything I want to become I'm guessing, right Mom?" Mark asked
"I suppose so, but I'm not sure for a lot of these." Mary said
"Don't worry about me Mom I'll pick one for myself, and join you." Mark said walking over to the vials.
Mary was about to say something, but had second thoughts,"Maybe this won't be so bad." Mary thought to herself as Mark drank from a vial. Mark began growing blonde fur all over his body, his hands became paws with thumbs, his feet became regular paws. Mark pulled the rear part of his pants down to see 5 tails grow in, and finally he grew a vulpine muzzle. Suddenly Mary had a worried look on his face as if he saw a ghost, and he ran into the bathroom, and shut the door. A few moments later Mark came out of the bathroom without pants, or underwear on, and Mary noticed that Mark's manhood was gone, and replaced by a vagina.
"Mom....I think I'm a vixen now." Mark said shyly, and blushed out of embarrassment.
"Oh god how will we explain this to your father?" Mary wondered out loud.
"Well, the same way we explain to him why you're a dragon. We can show him the vials, and tell him something only we would know. We just have to calm him down first." Mark said.
"Well Mark isn't wrong, ans she seems to be taking everything well, between me being a dragon, and her turning female. I just hope that Chris is the same way." Mary thought.
Mary then looked over at Mary to see that Mark was 'inspecting' her new body. "Mark!" Mary growled,"Now I understand why you were doing that, but please if you do only do it in your room behind closed doors."
"Okay," Mark said playing with one of her tails, but suddenly the doorbell rang, and it was....