After their baby was born, the panicked Jewish father went
to see the obstetrician Dr. Cohen.
“Doctor,” Mr. Spiegel said, “I don’t mind telling you,
but I’m a little upset because my daughter has red hair.
She can’t possibly be mine.”
“Nonsense,” the doctor said. “Even though you and your wife
both have black hair, one of your ancestors may have
contributed red hair to the gene pool.”
“It isn’t possible,” the man insisted.
“This can’t be, our families on both sides had jet black hair
“Well,” said the doctor, “let me ask you this.
How often do you have sex?”
Spiegel seemed a bit ashamed. “I’ve been working very hard
for the past year.
We only made love once or twice every few months”
“There you have it!” the doctor Cohen said confidently.
“It’s just rust.”