(Strip Number 4399, Original Publication Date, 10 January 1984)
Panel 1: We start things off with Mike asking Elly what 'aerobics' is; she tells him that he's seen it. It's that thing on television where women do exercises to fast music.
Panel 2: After Mike confirms that he knows what the word means now, Elly tells him that that's what she was doing last night.
Panel 3: He looks at his same old frumpy mom who wouldn't know cool if it bit her and tries to picture her doing anything impressive.
Panel 4: His declaration that she's gotta be kidding him indicates that he's failed.
Summary: It's a good thing that Elly usually doesn't try to be cool. Her allergy to being with the program (because they keep changing the channel) spares her a lot of indignation because her children think that she's never been with it and never will be.