At a time when onions were very scarce [many years ago now] I offered
some to a middle aged woman. She responded~ "You got them out of the ground
didn't you?~~ No thanks, I'll wait till the greengrocer has some in fresh".
I was very young at the time and quite bewildered. The onions were ripe
and very good quality 'Rousham Park Hero'. I had managed to get 1oz of seed
from Australia.
Where in/on earth she thought onions came from~ I know not.
There must have been many other instances.
Best Wishes Brian.