Sorted by: 5. It is informal/slang speech meaning "I enthusiastically agree with what you have said" or "I enthusiastically like the topic that you mentioned". For example: A:"Let's go to the beach." B:"Now we're talking, I'll get my bucket and spade." or. A:"And then the next day we went to the beach." B:"Now we're talking, I love the beach." More @Wikipedia
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