Musical, the Idea

I meant to start sooner in telling you how things are going with the musical I'm writing. Since it occurred to me that as long as I get one useful idea per day, work is moving ahead (unlike, say, construction on Lorne street in Regina) I'm going to try daily entries on the idea of the day.
Today it was the old man and the old woman. I'd listed them with about a dozen others as characters who lived in a heritage apartment in a western prairie city. I came up with an idea for a song. 
He:      Old man.
She:     Old woman. Old man,
He:       Old woman,
is how it begins. This comes from reading Stephen Sondheim's commentary on Irving Berlin about keeping it simple. Hard to do.
Anyway, the man and woman get to a song called "Body Flaws," several verses leading to a refrain, as in,
He:     We've got a lot of parts to our bodies.
She:    We've put a lot of feet in our shoes.
He:     Not wearing shoes.
She:    You should try it
Both:   (with a jump) and diet!
He:     Ah, what the hell . . .
She:    We all hear the bell
Both:   that tolls for our body flaws.
Not sure how to stage it yet. But that's the kind of thing I've been after so far today. 
The man and woman decide to go swimming at an outdoor pool, an obvious golden-tan-mine of body looks and images.
It may turn out by the end of the song that all this has been some kind of dream/fantasy (a stock element in musicals of the past), and we see the two of them in their living room, reading. A tremolo sustains in the score but no other sound, light or action. To black.