Don't know if it's a true story... heard it on a radio programme on the English-language Radio Netherlands many many years ago, and it must have happened long before my time.

The ferry from Harwich docks in Hoek van Holland. Foot passengers get off. There are two queues for Immigration, one saying "Dutch Nationals", one saying "Foreign Nationals".

Little old lady from England stops in the middle, looking all puzzled, calls out:

"And where we do BRITISH nationals go"?

(I know this must have happened long before my time because I don't ever recall seeing separate queues for Dutch/non-Dutch!)