Do your best
An older gentleman was on the operating table awaiting surgery and he insisted that his son, a renowned surgeon, perform the operation.
As he was about to get the anesthesia, he asked to speak with his son.
"Yes dad, what is it?"
"Don't be nervous, son; do your best, and just remember, if it doesn't go well, if something happens to me, your mother is going to come and live with you and your wife."