The lawyer's son wanted to follow in his father's footsteps, so he went to law school. He graduated with honors, and then went home to join his father's firm.
At the end of his first day at work he rushed into his father's office, "Father, father, in one day I broke that accident case that you've been working on for the past four years!"
"You did what!" His father exclaimed. "You idiot, what do you think put you through law school!"