Labor pains

A married couple rushed to the hospital because the woman was in labor. When they got there, the doctor said, "I have invented a new machine that you might want to try. It takes some of the labor pains away from the mother and gives them to the father." So the married couple decided that they would try the new machine. The doctor hooked the machine up and put it on 10% of pain switched from the mother to the father. The husband said "I feel okay, turn it up a lot more" so the doctor turned it up to 50%. The husband said "why donÂ’t you just put it all on me cause IÂ’m not feeling a thing." The doctor warned them "this much could kill you if your not prepared", but the husband replied "I am ready." The doctor turned the machine up to 100% but the husband still didnÂ’t fell a thing! They went home happy with a pain free labor! When they got home they were shocked to find the mailman was dead on the front porch!