My parents used to tell me and my sister that broccoli was baby trees. So we would think, "Wow, we're eating trees! Just like giraffes!" and would eat all the tops and leave the stems on the sides of our plates. Hey, at least we ate some of it.
And although we never believed it, we still refer to cauliflower as "albino rabbit brains."
A childhood belief about plants

others believed things like this
- I used to believe that broccoli were small trees Anon
- When I was little, I used to believe that the tops of trees touched the sky.Anon
- I used To think trees were giant peices of broccoliAnon
- I thought that broccoli were just trees that didnt grow all the wayAnon
- I used to believe that broccoli grew on trees. It looks like a tree, so it made sense, right?— Catherine...
- I used to believe that it wasn't wind that made the tops of trees move.. It was dinosaurs.— H