All of us know it's considered rude to answer a question with a question. Well, who says? I WANT you to answer my question with a question! One small caveat... The question you ask must make sense, contextually, based on the last question asked.
Example chain: "Why did you say that?" "Say what?" "Why are you avoiding the question?"... And so on. I'll start, any future posters follow the last question asked. :)
What are you thinking about?