Doonesbury by Garry Trudeau for February 05, 1971
Mike: Say, Lil. I've been meaning to ask you - what exactly do you expect out of our relationship? Lily: Oh, gee. I don't know. I guess I was kind of hoping our romance would blossom into marriage. At Magnolia College, we say, "Ring by spring, or your money back!" Mike: Really? Here we say, "You're taking the next bus back to Magnolia."