Doonesbury by Garry Trudeau for April 17, 1973
Joanie: Well, I guess it's about time I got this over with. I've put it off too long as it is. Hello? Oh, hi, honey! It's Mommy. How are you? Terrific! What? An "A" in reading? That's great... and a "B+" in spelling! Imagine! The zoo? Really, was that fun? Yes, the monkeys are my favorites, too... yes, and the zebras... say, honey, is Daddy home? Fine... yes, I'll hang on... Clint? Hi. I want a divorce.