Carla was in her late 60's when she went to the doctor, complaining of nausea, exhaustion and cramps.

After a thorough examination he finally confronted her with, "Carla, although it's medically impossible, even at your extended age, there's no doubt about it, you are pregnant."

"Impossible," she cried, and fainted dead away.

When she came to she staggered to the phone and dialed up her 83 year old boyfriend, "You old goat, you've knocked me up."

There was a long pause at the other end of the line, then a voice asked... "And to whom am I speaking?"