Growling and Raspy

I have no idea what has come over Justin. He now talks in this growling, raspy voice. He doesn't do it all the time, but it is so hard not to laugh when he does do it. And it is hard to understand what he is saying! I think it is his try at being funny. And he does get a good reaction out of his brothers - they get hysterical when he does it. I guess with an audience like that, he may keep this up for a while!