I never spoke with an apostate before leaving, but I did have some interesting discussions with evangelical Christians as a teen; some of whom knew more about the Bible and "Jehovah's Organization" than I did.
I remember one day a guy with a KJ Bible accosted me on my way out of the market and asked point blank if I was a Christian. It would have been so simple to just answer in the affirmative, but, troll that I was even at that tender age, I instead said I was a JW. I still remember the expression on his face. Next he asked me who I thought Jesus was. I replied that he's Jehovah's son. Then he breaks out his Bible...
Midway through his sermon my mom comes along: "What are you doing with my son?!" She exclaims as if she caught us both with our pants down; though of course she had seen his Bible and knew the answer to that. While they start debating over the trinity, I stand by and enjoy the show. I don't think my mom was prepared for this guy. She was expecting John 1:1, but the evangelical had a few more scriptures up his sleeve.
Eventually, my mom retreated into her car and urged me to get in the other side. "You people will say anything to deny Christ!" the guy yelled as my mom rolled up the window and started the engine. I don't think she could have been more anxious to leave if our new friend had been wielding a chainsaw instead of a Bible.