On the subway the other day I started yelling loudly that if they kept losing Jesus, they should put his picture on a milk carton and leave me the hell alone.
I think I am on some sort of banned list, have not had any religious callers in over two years.
Look for an opening in the conversation, and say the following in the most sincere tone you can manage:
"You know, it's funny you should say that. I keep having this dream where Jesus is sucking my dick/eating my pussy. I have an orgasm and feel this amazing feeling of peace and love!"
pick any subject that you have knowledge in and preach back after all spiderman has book all over the world as does home improvement or any other magazine
if its creationists ...invite them in an tell them that you teach chimpanzees to play the piano to grade 8 standard ...one of these talented apes (Tarquin)has just received a prize from the Royal schools of Music....after a triumphant performance of the Rachmaninoff 2....
I either stonewall them or make sarcastic digs at their efforts..... Sometimes I start preaching to them about aliens just to annoy them for a bit of fun.