Doonesbury by Garry Trudeau for April 03, 1973
B.D.: Hey, you're new in this class, aren't you? Man: That's right. My name's Skip Willis. I'm a freshman. B.D.: Freshman? You look kinda old to be a freshman. Man: Well, I'm twenty-six. I'm starting a little late because I spent the last seven years in a P.O.W. camp. B.D.: What?! A P.O.W.?! In my class? You're kidding! Man: Ssshhh... please... Mark: Did someone say a P.O.W.? B.D.: Stop the lecture!! Mark: Hey! Look! Here he is! Wow!