When my oldest son was about three, we were in line at the store behind a plus-size woman, when my son tugged on my shirt and in the loudest voice you ever heard said, "Why is that lady so fat?" Talk about wishing for floors to swallow us up!
Recently, I was on the Thruway with my 12 year-old (mentally four) Down Syndrome daughter. I told her to watch for deer on her side of the road. It was quiet for a few moments when all of a sudden she's yelling, "Cockaroo...cockaroo!" I said "What?" "I saw cockaroo!" she said. Of course, I didn't see one but boy was my mind struggling with what she actually saw. I finally realized she had seen a woodchuck sitting on its haunches and she thought it looked like the kangaroos she had seen in pictures. I chuckled for the longest time on that one.