When I was little, I believed that mushrooms were actually the ears of little tiny miniature elephants that were about two or three inches tall. Yes, this sounds silly, but bear in mind that at the TIME, I'd only ever seen cooked, sliced mushrooms, and they looked elephant-ish to me, so I put two and two together, lol.
A childhood belief about nasty food

others believed things like this
- I used to believe that mushrooms in the grass grew if it was sunny and rained at the same time.— Ryan
- I used to think that mushrooms were meat.Anon
- i used to believe that if i ate mushrooms they would grow on me— gwen
- I used to believe mushrooms were a meat.— Lee Ann
- I used to believe that smurfs were real. I never ate mushrooms. I still don't eat them.Anon
- I used to believe watertowers were giant mushrooms O.o... Don't ask... Really...— Robyn