A couple in their late thirties had their first child.
There was one major problem...The baby had brilliant RED hair!
After discussing among themselves the couple finally asked the pediatric chief of the hospital how this could be.
The Dr. said, "Well surely one of you has some distant relative that has or had RED hair. They both vehemently insisted that they had gone back three generations and there were no members of the family on either side who had anything but black hair since they were both Italian.
Perplexed the Dr. asked, "How long had it been since you had sex before the baby was conceived?"
The husband sheepishly said, "We had not had sex for many months and then we were astonished when my wife became pregnant."
To this the Dr. replied, "Now I know the answer...It is RUST!"
~~~GrayBeard~~~