What is what does bubba mean?

Bubba is a term of endearment and familiarity. It is often used as a nickname for someone, usually a close friend or family member. Bubba is also a Southern slang term that refers to a good ol' boy or a big, friendly guy. In the United States, the term Bubba has been popularized by films, television shows, and sports figures. It is common among military personnel, especially in the Southeastern United States.