This is my all time favorite word. Whether I overhear someone saying it, or I say it, or someone says it to me. Literally. The best word. I feel like it conveys a deep sense of caring.. not in a creepy way either (unless you're creepy). It's a term of endearment. A little more classy than "kiddo", but still implies that you are cared about (again, NOT in a creep way).