Am I All Right?

While John Gilbert was in hospital, he asked his doctor
to tell him whether his operation had been successful,
but the doctor refused to do so. The following day,
 the patient telephoneed the hospital and asked for Doctor
Millington. When the doctor answered the phone, Mr. Gilbert
said he was inquiring about a certain patient, a Mr. John Gilbert.
 He asked if Mr. Gilbert's operation had been successful
 and the doctor told him that it had been. He then asked when
 Mr. Gilbert would be allowed to go home and the doctor told
him that he would have to stay in hosptial for another two weeks.
 Then Dr. Millington asked the caller if he was a relative of the
 patient. 'No,' the patient answered, 'I am Mr. John Gilbert.'