Bobby short for Barbara, a secretary who worked at his managers office. He also didn't write it exactly _for_ her, his manager guy had the idea for the name and

Bobby short for Barbara, a secretary who worked at his managers office. He also didn't write it exactly _for_ her, his manager guy had the idea for the name and theme during a conversation with the guy who's secretary was bobby mckee. All this can be seen at the link in gp comment