Two trees are growing in the woods. Then one day a sapling grows between them. The first tree asks the other, "Hey, is that a son of a birch, or a son of a beech?" The second tree replies, "I don't know, but here comes a woodpecker, we can ask him." So they ask the woodpecker, "Mr. Woodpecker, you're an expert on trees, is that a son of a birch or a son of a beech?"

 

The woodpecker flies down and tastes a little sap and flies back. He says, "Gentlemen, that is neither a son of a birch nor a son of a beech, that is the finest piece of ash I've ever had my pecker in."