An elderly Jewish man was on the operating table awaiting surgery and he insisted that his son, a renowned surgeon, perform the operation.
As he was about to receive the anesthesia he asked to speak to his son.
“Yes Dad, what is it?”
“Don’t be nervous, son, do your best and just remember, if it doesn’t go well and something happens to me… your mother is going to come and live with you and your wife…”
This joke is included in the Black Book of Jokes. You can order it from here.