(Strip Number 662, Original Publication Date, 23 July 1984)
Panel 1: We start the next phase of the arc with Michael rushing over to hug Marian who makes a comment about how they thought that his plane would never get there.
Panel 2: Marian then says "Let's look at you."
Panel 3: She then sets up the punchline by commenting on how much older Michael looks.
Panel 4: When he says that he thinks they look a lot older as well, gobsmackage happens.
Summary: Well, we can see where Phil and Elly get it from, can't we? The inability to anticipate the predictable and horror at the unexpected have been proven to be germ line mutations that make anyone descended from Marian's broken chromosomes a piss-poor parent who panics needlessly because the ability to understand kids simply isn't there.