"Found another 'Lucky Penny' this morning Sylvia" she told me. "You know - 'Find a penny, pick it up, all day long you'll have good luck!' It's from the film Grease - when Jan finds the penny and Marty gives it to Kenickie for good luck before the race. But then he hits his head and Danny has to take over driving the car. So not so lucky really, I suppose."
I didn't know, but patiently listened.
"I keep finding them - funny really. The washing machine, the bedroom floor - and I always put them in one of my back pockets. You know, just in case."
Now I'm no scholar, but the law of averages tells me that to find three or four lucky pennies every week for the last year is not Mum's more than generous share of Good Luck.
And then the penny dropped.