Doonesbury by Garry Trudeau for November 11, 1970
Mike: Cathy, I'm glad you could come today. I want to get your reaction to a guy called Sam Smooth, who apparently gives lessons in attracting women! Cathy: Frankly, Mike, I've never heard of anything so..as..Sam Smooth: Hullo, my name's Smooth. You must be Mike...Mike: What are your rates, Sam?