The worst thing about ghouls is that they are not satisfied to just eat you alive. They eat your face and your body but they also crave your soul.
They want to walk around in your skin, breathe your air and meet your friends. They want to pick through your wardrobe and pet the dog, just before they have him for dinner.
With no life of their own they want to have yours, like someone else's coat from the Salvation Army. Try it on for size. If it's too snug, not quite right, just chew on it for a bit.