Fairies are prone to dying young in horrible accidents. The survivors need a brain that can easily ignore the things it doesn't want to think about not to go crazy. It's healthy for them, but for the people trying to explain them uncomfortable things, it's very frustrating.
Time for them to learn the birds and the bees. Or was it the trolls and the fairies... hmm.
Oooh I'm not sure they CAN learn it at all!
I'm curious how baby faeries (half-breeds) are created. By look on Asters face, so is she!