73

I was buying stuff for breakfast after I woke up on Saturday afternoon and went to the Waitrose where i had previously had a conversation about the end of the world with one of the checkout ladies. This time started very normally. I took my shopping up, bagged it up after it was scanned and just had the usual pleasantries with the checkout lady until I was paying. While i paid the lady was moving her fingers as if counting and when she gave me the receipt asked "What is 73 in French?" I wasn't expecting the question and just answered and left the store. I should have asked why. Why would she need to know what the French for 73 is during her supermarket shift?