My grandmother came over for tea last week. I made her sausage rolls and PG Tips. I noticed her shoes. “Those are pretty wild shoes, grandma!” I said. They were neon green and pink Nike Air Max. They went well with her flowered blouse and beige below-the-knee skirt.

“Thanks dear, I bought them on eBay.” I didn’t know she knew about eBay.

“Tell me more about eBay!” I strummed.

“Well, my darling youth, it is an online marketplace. A bit like the Wednesday market but on the computer. Surely you should know that!” Of course I knew that.

“I did Grandma, I was testing you.”

“Well don’t.” She sipped and chewed. “These are good sausage rolls.” She was right.