An Atheist sat next to a little girl on a plane and after awhile, he noticed she was reading a book about Jesus Christ. He said to her "You do know that book is a lie, right? Mind if I tell you some things about that book that will convince you God doesn't exist?" She said "Sure, but can I ask you something first? What is the main difference between the poop of a deer, rat and a cat?" He said "I don't know? What is it?" She said "How can you tell me anything about Christ when you don't know shit?"