Anyway, hopefully you get the picture: I say "Elle Macpherson" but it could have been any one of the other supermodels flogging undies. Of which there are many.
So, to recap. The Boomerang Child rejoins the chat.
And then from across the store comes the voice of Elderly Lady No.1.
"I've got a pair of them."
Her friend is surprised and suggests the other has misheard.
"I have," says Elderly Lady No.1. "I'll show you". Whereupon she promptly lifts her skirt to display her undergarments.
Relaying the story to me that evening the Boomerang Child admits it was hard not to giggle. It got even harder when Elderly Lady No.2 decided to do the same thing and show what she was wearing.
By this stage the girls behind the counter, Customer No.1 and Elderly Ladies 1 and 2 were all in on the fun and giggling away as the show (and tell) continued.
And naturally, because life throws up such instances, into the middle of it at high speed comes the busy courier.
By all accounts he burst through the front door with his parcel, offered his usual "G'day" and promptly froze, open mouthed, at the sight before him. Had he really just seen that or was he imagining it?
For a second there was the most awkward of silences. Then he scarpered.
I would love to interview him to see what he thought was going on. Imagine the radio call back to base. Wonder if he is getting counselling for emotional distress?
Back at the shop, Boomerang Child says the five representatives of inter-generational humour absolutely cracked up as the door closed behind the stunned courier.
It was, she said, just the best day.
And it seems there is to be some regular commercial benefit too.
Customer No.1 was more than happy with the advice and her purchase and is promising to shop there every week.
Apparently she reckons the free floor show made it an absolute bargain.