When my brother and I were really young (he was four and I reckon I was five) for some reason we thought that another word for a 'robin' was 'gay'!
Goodness knows where we heard it, but we used to stand in the garden of our playgroup and shout "gay!" at any robin we saw.
A childhood belief about birds

others believed things like this
- I used to think "Robin Hood and his merry men" was "Robin Hood and his *married* men."Anon
- My dad thought robin feet were made out of wood because they look like twigs.— Molly
- When I was young, I heard the word 'minion' for the first time and thought it was a miniature onion.— Karin
- In first grade, I thought that if I've never heard of a word before, then it wasn't a word.— Destiny
- For years I heard the word "pedophile" and thought it meant a pedicurist's tool.— Lauren
- I used to think that adam and the ants' stand and deliver was 'stand in your liver'.....— wook