Doonesbury by Garry Trudeau for February 23, 1977
Transcript:
Jimmy: Hi, Jen...Sorry I'm late. Jenny: that's okay. Our budding percussionist has kept me grounded anyway... Jimmy: He's been acting up again? Jenny: Hear for yourself. The next show is just beginning. Jimmy: Wha?...Good lord! The kid's got a back-beat! Jenny: It's just aggravation to me!