I had a similar experience. Was out for a friend's birthday. A girl came and sat on my lap. Asked what I did: "Data Analysis I replied".

"What's that?"

"I work with spreadsheets and information to extract business inisghts and make things more efficient?"

"Oh, what's a spreadsheet?"

"You know, like a times table, but with other information instead of the multiplied output of two numbers."

blank look

"What's a table?"

...

While Fenyman's efforts surely worked, My sample size of 1, on a whim; seems as though it didn't seem to be particularly efficient.