A Rough translation:
A man and his wife are sitting in the waiting room. The doctor calls him in, alone:
Man: There must have been a mistake, my wife got the medical exam.
Doctor: I'm terribly sorry we had mixup in the results.
Man: What does that mean ?
Doctor: Your wife has either Alzheimers or AIDS
Man: Thats horrible, what should I do now ?
Doctor: Take your wife, get into the car, and drive her out of the city. Leave her there, if she does not get home things aren't that grim, if she does, don't sleep with her anymore.