Story time! Many years ago I read a Maria Callas biography and I have no idea if this fact is true or not, but here it goes:

Maria was self conscious about her body image and she wanted, moren than anything, to look as thin as her idol: Audrey Hepburn. So in order to do that, she went to a famous doctor who would give his patients a pill thay contained tape worm eggs so they would hatch and live inside them making them lose weight and then this same doctor would deworm them but plot twist! María loved being thin so much that she decided to keep her tapeworm so she would not gain back any weight. This book said that when she took long baths, the worm would kind of wiggle out a bit due to the warm water and then coil back up inside her when she existed the tub. This piece of info was very disturbing for me.