Doonesbury by Garry Trudeau for February 12, 1972
Transcript:
Mark: I don't have to. I know. You got an anonymous Valentine. Mike: Word sure gets around fast...can you believe it? Me getting a Valentine from a secret admirer? Mark: Nope. Mike: I wonder who it is. It's probably Nichole. Or maybe Boopsie! No, I know... Mark: It's your mother. She wants to know if you got her Valentine...
well, she did say she likes to watch him move. creepy, but we persevere.