A more politically correct word commonly used to mean "fat" or "chubby". Ironically, the person in question is generally not healthy in the classic sense, although well-fed.
Ethel: "So doc, what's the news?"
Doctor: "To be honest with you, your health isn't good at all. In fact, you're extremely healthy."
describing something that is good or cool. can be used to describe many things usually drugs or alchol but also can be used when refering to people, places, and things.