You know, this reminds me of this story that I read a looooong time ago (I think elementary school or something). Basically it was about a girl who suddenly discovers that she is sprouting wings. Naturally she's all excited and stuff because she's expecting to have the beautiful fairy type wings (or at least bird like wings). The day they finally sprout, she's in agonizing pain, and once she is finally relieved of the pain, she looks in the mirror to find that she has sprouted "Bat-like" flesh colored wings. And to make matters worse, she can't even use them to fly.
I never pictured it going down this way in the show, but wow it actually would have made sense if it did happen this way, even if it would have been a bit disturbing to see something like this happen.
"A reader lives a thousand lives, the man who never reads lives only one." - George R.R. Martin