Mr. Smith goes to the doctor's office to collect his wife's test results.
The lab technician says to him, "I'm sorry, sir, but there has been a bit
of a mix-up and we have a problem. When we sent the samples from your wife
to the lab, the samples from another Mrs. Smith were sent as well and we are
now uncertain which one is your wife's. Frankly, it is either bad or
terrible!"
"What do you mean?" said Mr. Smith.
"Well, one Mrs. Smith has tested positive for Alzheimer's, and the other
Mrs. Smith has tested
positive for AIDS. We can't tell which is your wife."
"That's terrible!" said Mr. Smith. "Can we do the test over?"
"Normally, yes. But you have Blue Cross Health Care, and they won't pay for
these expensive tests more than once."
"Well, what am I supposed to do now?" said Mr. Smith.
"Blue Cross Health Care recommends that you drop your wife off in the middle
of town. If she finds her way home, don't sleep with her.