Doonesbury by Garry Trudeau for May 19, 1978
Transcript:
Voice: Hello, am I on the air? Is this Mark's old man? Man: Yes, this is he. Go ahead. Voice: Well, I just wanted to say that I support where "Marvellous" Mark is coming from, as far as wanting his own space. I don't think it's fair that you lay your middle-class trip on him just because... Man: Now, hold on just a minute, young man! I'm not going to put up with that sort of disrespectful tone! Voice: Oh... sorry, sir, I... Man: Let me speak to your father!