The whole hospital was amusingly surprised when a 70 year old man became the father of a kid, with a 20 year old girl.
The nurse came out to congratulate the fellow, saying: "This is amazing. How did you do it at your age?"
The 70 year old answered, "You got to keep the old motor running."
The next year, the young bride gave birth again.
The same nurse said: "You're amazing. How do you do it?" He again said: "You've got the keep the old motor running."
Again, the third consecutive year, his wife gave birth to another kid.
The nurse then said: "Well, well, well!!! You certainly are quite a man!"
Now, the old man said, "You've got to keep that old motor running"
The nurse said: "Well, you better change the oil. This one's black."