Hopefully I wouldn't be punished much for posting this but it was just too funny to pass up.
One day God came to Adam for a brief discussion. "I've got some good news and some bad news." God said. Adam looked thoughtfully at his maker and replied, "Please give me the good news first."
Eve will be very pleased that you are now equipped with this organ as she will be able to conceive children." Adam, very excited, exclaimed, "These are great and wonderful gifts you have given me. What could possibly be bad news after such great tidings?" God then looked upon Adam, and said with great sorrow, "The bad news is I only gave you enough blood to operate one of these organs at a time."