One of the many problems with aging is that you begin to think of yourself as a slob because your birthday suit can never be cleaned or pressed no matter how spotted or wrinkled it gets
As people age, they often start feeling less attractive or confident about their appearance. This feeling is partly due to the natural decline in physical condition, which makes it harder to maintain a polished and tidy look. The aging process can lead to a sense of neglect or self-criticism as the body shows signs of wear and tear.
Bob Smith humorously highlights that aging causes a shift in self-perception, comparing oneself to a "slob" whose "birthday suit" can never be perfectly cleaned or pressed. This reflects the inevitable changes and imperfections that come with age, emphasizing that no matter how much effort one puts in, some aspects of aging are beyond control.