until i read here that gherkins were the same things as pickles, i always thought they were a mythical creature like a gnome, or an elf or something. i never heard someone call a pickle a gherkin, or vice versa.
A childhood belief about gherkins

others believed things like this
- when i was little thought that ants changed traffic lights from green to red and vice versa.Anon
- Up until the age of 21 I believed pickles were pickles, I had no idea they were cucumbers.— Jason
- I used to believe the pickles were the fingers of martians. Because of that, I did not eat pickles.— alexandre, a French student in eighth grade
- When I was little I thought rhinoceroses were mythical creatures.Anon
- I thought gherkins were pickled slugs.— Cat
- Until just a few seconds ago, I thought gherkins were beans or something weird like natto...Anon