I think it was last year that I had to break it to my mother that pickles are not, in fact, a naturally occurring relative of cucumbers, but rather the result of placing cucumbers in some sort of brine. She's almost 70, and apparently believed there were pickle plants out there that you could just walk up to and grab a gherkin, or something.
I had a friend who recently started growing things I his garden. The cucumbers out grew everything. When I went to his house there was cucumbers everywhere. In jugs of water in the fridge, everywhere.
I said why don't you make gherkins? He replied with "dude I've got too many bloody cucumber why would I start growing gherkins.".
I had a good laugh.