I just happened to look out the window yesterday when I saw a strange vehicle pull into my driveway. In an instant, I knew who it was. Yep, you guessed it. Jehova Witnesses. They saw me, so I was stuck.
I greeted them at the back door, standing outside--a man about my age and a teenager. I decided to have some fun by telling them outright that they were wasting their time. "I'm an atheist". I pointed out all my window stickers advocating atheism. I could see the shock in their faces.
"Why?", the kid asked. I gave him the standard "reason over superstition and faith" answer. More questions. "Beauty of the earth?" Ans: evolution. "Have you read the Bible?" Ans: I don't believe in fairy tales (plus a few more digs).
This went on for a bit longer when I finally said that I didn't have to defend myself. The older man twice said "You sure don't look like an atheist." I asked him what an atheist looks like. He didn't have an answer. I think I was the first non-believer he ever ran across, and it shook him up.
I almost wish I had more time to "argue", but I was getting cold. I wanted to ask the kid if he flunked biology since he apparently hadn't learned anything. Was god in his textbook explaining how life works?
Anyway, I got my jollies.