I once had to explain the concept of having multiple Internet browser tabs to an elderly woman. She was certain nobody else could ever manage accessing a webpage AND their email at the same time, and was angry at our 2fa system for requiring that.
Another time I had to explain to my romantic partner at the time that winter actually lasts from the 21st of December through the 20th of March. He was convinced that winter coincided with the Christmas season, and that spring started on January 1st.