In the song Rudolf the Red Nosed ReindeerI used to believe there were more reindeer than I had been told about. You know, Dasher, Dancer, Prancer, Olive..
The line went "Olive the other reindeer used to laugh and call him names..." I used to think what a nasty reindeer Olive was and why did Santa keep her???
A childhood belief about misheard lyrics

others believed things like this
- For the longest time I thought that Rudolph the Red-Nosed Reindeer had a very "chinese" nose...Anon
- I used to believe that the red thing in the middle of a Greek olive was the pit.— Liz
- i used to bielieve if you get hit
in the nose you will turn into
rudolph the rednose reindeer— kurt santana - I used to believe reindeer made it rain because for many years it rained on christmas eve night.Anon
- I believed that Reindeer loved popcorn, and so I would cook a bag and scatter it on the porch.— Popcornsanta
- I didn't know Reindeer existed, I thought they were just christmas animals for storiesAnon