Doonesbury by Garry Trudeau for July 16, 1973
Transcript:
Voice: Well, our time's about up, Scot. Scot, Scot and Ted. I'd like to wish all of you at NASA good luck with Skylab. Is there anything you'd like to say to our viewers before you leave for your epic journey? Voice: Nope, not me. How about you, Ted? Voice: Nope. Not me. How about you, Scot? Voice: Yes, I'd like to say hello to my son Scot.
According to Wikipedia, no one named Scot or Ted was in any Skylab crew.