Apologize

You decide that you should apoligize to the boy. You say, "I am sorry for trying to kill you. I guess I just paniced when I realized I had a werewolf in my house. At least it is over." You take off the fur coat. The boy says, "Well, it is not exactly over now. I did bite you to share my immunity." You realize that your leg itches. You look down and realize that it is a werewolf leg. Uh-Oh.