You feel your body changing abruptly. More so than the change from male to female. First your arms and leg are forced into immobility. Your arms snap along your body and your legs together. You barely have time to shout out your fear and indignation. Then it is the strangest sensation and vision. And you FEEL the changes more than you see them. You see your body elongate and shrink a little. But above all elongate. And flatten, as if cartoonishly pressed into a tube. Yes, your body is round and flat as a tube! Your skin smoothes out and becomes completely white, with just a few flakes. Your feet retract into the flesh of your ankles and vanish. What are you becoming? You can't even speak anymore but you get an idea from your shape. Or rather, the shape taken by your head. From the neck up, it flares slightly upwards, widens and flattens. You cannot see anymore. Nor smell. You certainly cannot move. You can hear, though. From the shape your body has taken, you can guess you've become a mushroom. A mushroom! How horrible! Why? What can you do as a mushroom? Nothing, that's what! The only advantage is that you are not a girl anymore. In fact, you are genderless. What did that evil stupid fairy do to you? And why? You can't live your life as a mushroom!
"There!" says the fairy excitedly. "A wonderful magical mushroom! You'll be a big hit!"
You wish you could shout out insults at her because being a mushroom is bound to be boring beyond words. A mushroom can only... Wait, did she say 'magical'? What did THAT mean?
"You are a very special mushroom, " she explains. "You see, as transformations go, humans like you are extraordinarily malleable and easy to change. And fay creatures often have very low fertility rates. So we adopt humans or we get pregnant with them through eating them as magical food. A fairy creature wanting to know the joys of maternity will eat you and swallow you, and then he or she will be pregnant with you, deciding your appearance, even. You will then be reborn as a sweet, sweet fairy creature. Isn't that wonderful?"
What?!?! You are to be eaten and then become a foetus in a surrogate mother? Ugh! Disgusting! No way! Alas, there is nothing you can do, what with your inability to move. You can just feel the fairy grab you and zoom away with you in her arms, saying that a wizard or trader will offer for you a lot of gold coins or expensive things.