So my Mum and Dad decided to go to Berlin. And my mother-in-law who lives there, offered to pick them up from the airport and take them to their hotel.

Today, she's going with them to Potsdam for a bit of sightseeing. None of them is exactly athletic, and I assume they will make a slow and stately progress around the estate.

All very well, except that she doesn't speak English, and they don't speak German. Well, my Mum has a little, but it's ... er, creative.

Mind you, that's probably just as well. There's much less chance of them starting a new World War.