I remember a misconseption I had many years ago.
I kept seeing advertised in our local newspapers events, this one was called a
"FLEE MARKET"One day whilst we were driving past a place and I saw a big banner advertising this event, I asked my husband
"Why on earth would anyone wants to sell flees or even anyone wanting to buy them"?If you know what this event is you will apreciate the laughter that followed by my husband.
He later patiently explained to me the meaning.
I felt so silly, however in my defence I am not
"thick" but coming from another country I had not known about this expression/name and what it really was.

For the benefit of others who like me then, do not know what it is:
A flee market is a place where people sell all sorts of things which are of small value unwanted items
and people want to get rid of them and make some cash in the process.