You are a 21 year old Human Girl and you know how to cook, you just saw an advertisement by the Magic Shop for their Magic Food and you decided that you want to give it a try, you choose the Frozen Food Section on the and when you pay the fee for the food and for it to be teleported to your kitchen, you are given different options for which food you want.
The Frozen Food Section has many different foods to choose from ranging from Italian Foods, to Types of frozen cuisine meals, there are many different choices, they could be pizzas, french fries, fish sticks, steaks, pot pies, the list goes on etc. There are so many different frozen foods to choose from, you don't know which one to pick. They tell you that the only thing that will change of you is your gender and appearance, but since these food products are magical and you are one of the first customers if not THE First.
Who knows if the products they give you will cause you to grow a naked hairless bareskin human tail just above your new male human girl anus or turn into a male animal whether real or mythological though.