Perhaps Bill would do better singing dirges about his plight in a multi-child family. He is, no doubt, an Only Child, sent to the wrong family by mistake. Still, he has to act the part. ;o]
Of all middle children, Bill is the middle-est, and has been since Tom was born.
The guitarist and producer Jack White was the youngest of ten children. Bill could be like him and WORK instead of just hanging around ;-).