I very much enjoyed a show called Jonathon Creek (and still do actually) and when it first started I was about nine or so. Well I hadn't missed a single epsiode until that point and so I was baffled when my mum said I couldn't watch it one evening. I demanded to know why and her response was: "The actor who plays Jonathon is sick tonight and can't be in it," and I actuallly *believed* her.
(It later turned out that that epsiode had a fairly tame sex scene in that she hadn't wanted me to see)
A childhood belief about tv

others believed things like this
- A friend believed that they used a tame shark during the filming of "Jaws".— Wendy
- I used to think that if you didn't have a birth mark you hadn't been born.— Kim
- I thought if someone hadn't passed the Law of Gravity, we would all be floating around in space.— Trudee
- my Dad told me ice rinks were defrosted every evening and turned into swimming pools— neil
- I believed that female teachers got to choose if they wanted to be called "mrs. or miss" — Jenna
- I thought pretending I was sick to stay home from school was called cookie not hookie.— Jen