Two old men were arguing the merits of their doctors.
The first one said, “I don’t trust your fancy doctor. He treated old Jake Waxman for a kidney ailment for nearly a year, and then Jake died of a liver ailment. “
“So what makes you think your doctor is any better?” asked his friend.
“Because when my doctor treats you for a kidney ailment, you can be sure you’ll die of a kidney ailment. “
This joke is included in the Black Book of Jokes. You can order it from here.