DOG is trying to hurry George up so they are not late to their Christmas party, and he works himself up so much that he gets beside himself! When you are so anxious or so worried or so upset that you are beside yourself, that doesn’t leave any room for any of the good things that you can be. George is here to talk DOG (and us) down from being so worked up that we get beside ourselves, and that is a very good thing.
Remember: Be like cat. Be good to self.