Classic Mark and always worth a repost. We were living in Calis at that time and one of our friends was staying in the same hotel as these two - and they were, apparently, total loops
I believe they had been staying at Poppy Apartments a couple of weeks before us and the politest thing we heard was they were nutters. Various expletives normally preceded the word nutters in most cases though!
I wonder how any future holidays of theirs went though.