"I know!" he says "Would you like to become a werewolf like me?"
You are taken aback by this, and back away in shock. "You want to bite me and turn me into an uncontrollable savage monster?1?"
"Look at me." replies the werewolf with a smile "I'm not an uncontrollable savage monster, am I? Besides, it'll only be a little nip."
"Will it be permenent?" you ask.
"Oh, no. You'll be a werewolf for a while and then the effects will wear off unless you want to be a were again. You don't have to wait for a full moon, you can change anytime."
You think it through and finally decide yes. You roll up your sleeve and hold out your arm. "Please try not to make it too painful."
The werewolf nips you, drawing blood and you scream out in pain! You stare at your arm and see that the bite wounds are healing, to be replaced by a series of scars, criss crossing into the shape of a pentagram.
"It's working!" cries the wolf