Doonesbury by Garry Trudeau for October 17, 1973
B.D.: Ceramics?! How could I be failing ceramics?! Zonker: Well, I'll read you the report from your instruct if you want... B.D.: Whazzit say? Zonker: "Ceramics 11-A. Grade: D. Student has shown poor attitude in the few classes he made. Furthermore, he has spent all term working on only one project - an ashtray." B.D.: Listen, classy ashtrays take time! Zonker: I agree. This is unreasonable.