My wife and I have convinced both our children that the bales of hay you see no-a-days wrapped in polythene are actually cow eggs.
A childhood belief about general

others believed things like this
- My Dad told me that the big bales of hay wrapped in plastic sitting in the fields on farms were cow eggs.Anon
- Up until I was nine my uncle told me that the round bales of hay were cow eggs.— Fred
- I was convinced that children weren't humans, only adults were, children were a total different race!— Leda
- I used to believe rabbits could lay eggs. See what Easter is doing to our children? lies! lie I tell you!— Kitty Kat
- I had my wife convinced that Steven Hawking made his fortune as the original voice for the speak N spell toy.Anon
- I used to think that bales of hay were cow cocoons.— Wally