Hearing Aid..very useful

An elderly 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%
The elderly gentleman went back in a month to the doctor and
the doctor said: “Your hearing is perfect.
Your family must be really pleased that you can hear again.”
The gentleman replied: “Oh, I haven't told my family yet.
I just sit around and listen to the conversations.
I've changed my will three times!”