The alcohol decreases your caution and so you examine the book.
It seems to be very old and when you open it the dust of centuries rises.
Normally it isn't a good idea to read in a book which can transform you in anything and you don't know how to handle it, but your a drunken and ignore this fact. Perhaps you find a spell which makes you male again. How bad can it be?
After reading a few pages the letters blurred in front of your eyes and you feel very sick. Than you find a spell which should transform you into a human. Or better 'You think that this spell should transform you into a human'.
You begin to babble the magic words when a tingle goes through your body you try to get a clear view to your body and see that your black fur fall down on the earth. Your claws and paws become normal hands and feets, only your nails are a little bit longer and sharper than normal. Also your face is normal again, but your nose lokks like a muzzle and you has already cat-like teeth and ears.
There you are! Now you look more human than for an hour. But now you see your huge breasts better!
You are so fascinated from your sucess and also drunken from the rum that you doesn't mention that your skin has now a light green tan like a elf or a dryad.