Officials in most international organisations have to wear ID when they are at work. Usually they hang it around the neck or clip it to clothing. And international organisations, by definition, employ people from various countries, many of whom speak excellent but not always impeccable English.
Old Cliffie was on an official trip to Geneva with his favourite secretary. They signed in and were issued with ID cards. Old Cliffie opted for the snazzy metal chain and hung the card around his neck, while his favourite secretary clipped it to her Ally McBeal jacket.
As they were doing this, their host for the meeting - a smooth-talking Spaniard whose gaze lingered far too long on old Cliffie's favourite secretary - arrived to welcome them. As he watched them struggling with the chain and the clip of their ID cards, he smiled and said: 'Ah, I see that you Mr Claven are a swinger and that you Miss' - bending too close to read the card for old Cliffie's liking - 'are a hooker'.
With a smile of triumph, old Cliffie ushered his favourite secretary through the door, leaving Don Juan to wonder why he had been given such a frosty glare.