If someone is brave, ie., stupid enough to even try to tell me a joke about cats that has to do w/harming them in any way or a joke that is anything other than cute, they get an education from me really quick! I don't understand why some people feel that violence against a cat is funny and I do believe that this is a large contributing factor to the heinous crimes that are committed against them every day. Case in point: the little kitten in NC that some teenage boys thought would make a great football and the poor little guy ended up losing a leg because of it.
This guy has danger written all over him. He's a stranger who has the potential to harm your family. I would forbid him to enter my home or be anywhere near anyone I love. Guns are not toys and to treat them so nonchalantly, especially to a child, is not only irresponsible, it's dangerous and could turn deadly. Your daughter needs to be made to understand the seriousness of this situation and the consequences of her lack of concern for her son's safety. This isn't an indictment of gun owners; I know several responsible gun owners and they would be appalled if they heard this story. Take control of this situation now before it becomes a life-long regret that you can never change.