Man gets the pain

A married couple ran to the hospital because the wife was having her baby.
The doctor told them, "I have a new machine that takes some of the pain away from the mother and gives it to the father."
So the married couple decided that they would try this.
The doctor put the machine on the husband at 10%.
The husband said "I feel okay. Turn it up more!"
So the doctor turned it up to 50%.
The husband said, "Put it to 100% because I don’t feel anything."
But the doctor warned them, “It could kill you if you’re not prepared"
The husband replied, "I am ready!"
So the doctor turned the machine up to 100%.
The husband didn’t feel a thing and they went home happy.
When they got home, the mailman was dead in front of their house!