I've got a couple:
- I used to think, probably up until twelve or so, that tortoises and turtles were the same thing. It was simply an alternate name they went by.
- That people, once they grew older, never stopped growing in height. I always imagined by great-grandfather (as he was a tall man anyway) walking around like Mr. Tall from the Mr. Man series. Thank you, Roger Hargreaves.
- Until the confusion was later dispelled by my father, I thought when a 'toast' was given by someone, to someone else, that they would be placed into a giant toaster later in the day (without anyone seeing), and they would indeed die. I actually wrote a short story on this a few months ago.
- Quite common, though I believed that in the 'olden days', or the days of yore as it were, that everything was actually black and white, like in the old pictures. I'm a die-hard romantic, and at the age of twenty-two, I like to still think this. Sue me.