Listen to Granny because Granny always knows best!
Get a grip!
Friday the Thirteenth is just another day. It is no more unlucky than any other day.
To illustrate: I met my late and unlamented spouse on a Friday. Only it wasn’t the thirteenth. And I couldn’t blame luck. Nope. I wound up married to the louse because of the effects of rough cider not the friggin’ date….
So. Get out from under the bed. Get your legs down the appropriate holes in your trousers (or pants if you are a bloody colonial), and try to act like you have a brain cell.
Superstition is crap. It will never be anything but crap. It is designed to sell crap. And to allow the feeble-minded to blame their inadequacies on a higher power.
Again I say crap.
If I see anybody surreptitiously turning their money in their pocket, or avoiding their reflection I shall be kicking ass…