Doonesbury by Garry Trudeau for March 29, 1972
Transcript:
Mark: Dad, I've looked over your bill. It's ridiculous. How could I possibly pay you $63,851.13? I've even already spent next month's allowance. ...The whole thing is unbelievably childish anyway. I refuse to pay you and you can't make me! Phil: You'll hear from my lawyer in the morning.
And considering the circumstances, we know the lawyer isn’t working on contingency.