A veterinarian was feeling ill and went to see her doctor. The doctor asked her all the usual questions, about symptoms, how long had they been occurring, etc., when she interrupted him:

Hey look, Im a vet – I dont need to ask my patients these kind of questions: I can tell whats wrong just by looking. Why cant you?

The doctor nodded, looked her up and down, wrote out a prescription, and handed it to her and said, There you are. Of course, if *that* doesnt work, well have to have you put down.