After the baby was born, the panicked
Japanese father went to see the obstetrician. "Doctor," he 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 my have
contributed red hair to the gene pool."
"It isn't possible," the man
insisted. "We're pure Oriental."
"Well," said the doctor,
"let me ask you this. How often do you have sex?"
The man seemed ashamed. "I've been
working very hard for the past year. We only made love once or twice a month."
"There you have it!" the doctor
said confidently. "It's just rust."
