I was on a christian school as a kid, my mother was reformed and the public non christian school was too far away so my dad was okay with me going there, but mocking christians, hmm, I said it was nuts that they believed God existed to some friends, but one girl was really religious, the earth was flat and she couldn't skate on sunday and had to wear a dress ad a hat to church. First we made fun of it, but then we felt really sorry for her that she always had to watch her brothers and sisters and couldn't skate with us. One moment she cried: I don't believe in God anymore! She got so sick of the rules. We were all shocked. And one was really christian. When I made an innocent joke that Moses was the first grocery keeper in the Bible because he offered God praise which in Dutch is a vegetable, she cried. Well that was my last funny joke.