Doonesbury by Garry Trudeau for July 25, 1972
Transcript:
Mr. Winters: Well, if it isn't ol' man Slackmeyer and his son! Mark: Hi, Mr. Winters! Phil: Son? What son? I hate to contradict you, Jack, but you're wrong. You may have thought I had a son, buy actually, in reality, I don't. Son? No, no, Jack, I'm afraid you're quite mistaken. Mr. Winters: I could have sworn you were his son. Mark: Apparently not.