This is an old joke. I recently saw it again on Doug Pagitt's blog. It always makes me laugh...
I was walking across a bridge one day, and I saw a man standing on the edge, about to jump off.
So I ran over and said, “Stop! Don’t do it!”
“Why shouldn’t I?” he said.
I said, “Well, because there’s so much to live for!”
He said, “Like what?”
I said, “Well, are you religious or atheist?”
He said, “Religious.”
I said, “Me too! Are your Christian or Buddhist?”
He said, “Christian.”
I said, “Me too! Are you Catholic or Protestant?”
He said, “Protestant."
I said, Me too!
Are your Episcopalian or Baptist?
He said, “Baptist!”
I said, “Wow! Me too! Are your Baptist Church of God or Baptist Church of the Lord?
He said, Baptist Church of God!”
I said, “That’s great, me too! Are your Original Baptist Church of God or are you Reformed Baptist Church of God?”
He said, “Reformed Baptist Church of God!”
I said, “Me too! Are you Reformed Baptist Church of God, Reformation of 1879, or Reformed Baptist Church of God, Reformation of 1915?”
He said, “Reformed Baptist Church of God, Reformation of 1915!”
I said, “Die, you heretic scum!” and then I pushed him off.