When my brother was little my family used to call gherkins "pickled monkeys' willies" and my brother thought that was what they actually were. It didn't stop him eating them though. But he also used to eat the cat's biscuits, and when he was about one I found him gingerly tasting his own poo, directly from his nappy that had just fallen off. It's amazing what kids will put in their mouths.
A childhood belief about gherkins

others believed things like this
- I thought gherkins were pickled slugs.— Cat
- My father used to call soya sauce "monkey blood". I didn't even consider tasting it for years!— Me
- I used to believe that monkeys were related to fish as they both have mouths!— Quako
- My little brother was afraid of toliets cuz he thought monkeys would jump out of his butt.— ~~~ Crazy Bro ~~~
- When I was young, I thought that rice was actually ants eggs! Didn't stop me from eating it though (: -@— Doh!
- My mother convinced all of us kids in our family that the large rhubarb in the garden was a Man-Eating Plant. — H.Miller