After a year of marriage she went into the hospital to give birth.
The nurse came out to congratulate the fellow saying:
"This is amazing. How do you do it at your age?"
He answered, "You've got to keep that old motor running."
The following year the young bride gave birth again.
The same nurse said: "You are truly amazing, How do you do it?"
He again said: "You've got the keep the old motor running
The same thing happened the next year.
The nurse then said: "Well, well, well!! You certainly are quite a man!"
He responded, "You've got to keep that old motor running."
The nurse then said: "Well, you better change the oil. This one's black"