A childhood belief about general

When I was 6-9, my parents and I were in horseback riding lessons. We went every Sunday afternoon, even in the middle of winter (I live in Canada, you realize). We all had to go one at a time, so our lessons took up the entire afternoon.

The first year, it was, indeed, the middle of winter and wasn't dressed warm enough. I had gone first, so I had to wait outside for my parents to finish. I was frozen down to the bone! To pass the time, I discovered a way to explain why it seemed like that two hours was so long:

A second is a minute, a minute is an hour, an hour is a day, etc. up to "a millenium is a billenium".

From then until I stopped riding, I thought that that was how time worked when it was cold outside.