What do you like to talk about?
I'm passionate about my work and happy to discuss topics but not too keen to explain it to someone who has nill knowledge of the subject or industry.
Honestly I don't talk much. But generally things related to whatever we're doing, entertainment (books, movies, sports, and so on), my kid when I had him, and now that I am getting older a bit more philosophical meaning of life type stuff.
I see this a lot and it's interesting because I don't like to talk about myself much. Doubly so about work. I wonder how many of us there are.