Owl explained about the Necessary Dorsal Muscles. He had explained this to Pooh and Christopher Robin once before and had been waiting for a chance to do it again, because it is a thing you can easily explain twice before anybody knows what you are talking about.
A. A. MilnePooh hasn't much Brain, but he never comes to any harm. He does silly things and they turn out right. There's Owl. Owl hasn't exactly got Brain, but he Knows Things. He would know the Right Thing to Do when Surrounded by Water. There's Rabbit. He hasn't Learnt in Books, but he can always Think of a Clever Plan. There's Kanga. She isn't Clever, Kanga isn't, but she would be so anxious about Roo that she would do a Good Thing to Do without thinking about it. And then there's Eeyore. And Eeyore is so miserable anyhow that he wouldn't mind about this.
A. A. Milne