I'm not sure if this is a Canada only show (Polkadot Door), but I only 4 years ago figured out that Polkaroo was played by the other host on the show...I thought he just had terrible luck and he would always leave right before Polkaroo would come in. (by the way, I am 27)
A childhood belief about tv shows

others believed things like this
- in the song "show me heaven" i used to sing "make me breakfast" instead of "leave me breathless"Anon
- I used to think that 'black comedy' was show like Family Matters and The Cosby Show.— Katie
- I used to think that every time a show came on tv, that the actors were inside my tv acting out the show.Anon
- i thought there was a "that 80's show" and "that 90's show" too— :D
- I used to believe the show Law and Order was a gardening show called Lawn and Order.— Adriana
- I used to believe that if I broke the T.V. during a show, I could get into the show— Vanessa