Remember the old guy in your neighborhood who used to yell when kids were on his lawn? Well, the old guy just got a lot scarier. Pa. Gov. Tom Corbett is expected to sign an expansion of the so-called Castle Doctrine, the law that allows you to protect your home and yourself with deadly force. Now citizens won't have to wait until the intruders enter their house before shooting. The old guy can shoot at the kids who trespass on his lawn.