It seems an older gentleman had serious hearing problems for a number  of years.  He went to the doctor and the doctor was able to have him fitted  for a set of hearing aids that allowed the gentleman to hear 100%.  A month later
he returned to the to the doctor and the doctor said, "your hearing is perfect.   Your family must be really pleased that you  can hear again."

To which the gentleman said, "Oh, I haven't told my family yet. I just sit around and listen to the conversations.  I've changed my will three times!"