I thought that in movies or TV shows when people died, that they actually died. I found it weird when they came back in other shows/movies.
I thought my cuzens were a couple. It was disturbing to find out that they were brother and sister.
I thought Pokemon were real (and still wish and hope that they are).
One time my mom was talking to my dad and told him that her friend got "fired" from work. I literally thought she was lit on fire. I was so confused.