74 is right on this, but if your parents do not want a firearm in your house then you have to study all other types of weapons to defend your self. Even a hammer if used right can be a great weapon. An FBI report said that there were more people killed by criminals using bats and hammers then long rifles. If the criminal would have gone though the window a base ball bat may have saved you if used right. There are no laws that I know of for a base ball bat defense.