I used to think that actors on TV shows weren't really kissing. That one was standing slightly farther back than the other (in relation to the camera) and they would make kissing motions. Because why would they actually kiss?
A childhood belief about tv shows

others believed things like this
- I use to believe that kissing your elbow would make you change your sex when you woke up the next day.— Chuck
- I used to think that the laugh track on sitcoms were the camera men, directors, other actors, ect. laughing.Anon
- I used to think that the actors on tv shows sang the show's theme song.Anon
- I used to belive kissing boys made your teeth fall out.Anon
- I believed that kissing a toad would give you warts, but it never stopped me from a dare.— Kirstin
- I used to think that "No standing signs" meant that you weren't allowed to actually stand in the area!Anon