An old man finally bought a hearing aid after becoming virtually deaf. It was one of those invisible hearing aids.
"Well, how do you like your new hearing aid?" asked his doctor.
"I like it great. I've heard sounds in the last few weeks that I didn't know existed."
"Well, how does your family like your hearing aid?"
"Oh, nobody in my family knows I have it yet. Am I having a great time! You bet, I've changed my will three times in the last two months."
