Just had dinner with my parents. I wrote out these numbers on a card:

1...2...3...4...5...6...7...8

...without the ellipses.

I put the card in front of my father and asked, "What is the third from last number? This is not a trick question."

He pointed to the six.

I did the same for my mom, who is shrewd, and she counted backwards from the eight and stopped on six. She said, "Six."

I thanked them. They asked what it was all about, and I said, "People on the board are discussing what the meaning of 'third from last' is."

Mama said, "I'd think you'd have better things to do."