Single Couple

A Cork travel agent looked out through his window to see an old lady and an old man gazing longingly at his display of posters for exotic holiday resorts. As a publicity gimmick he decided to offer them a free round-the-world cruise with all expenses paid. When they returned some months later he asked the old lady if they had enjoyed themselves. 'Wonderfully', she replied, 'but tell me one thing, who was that old man I had to sleep with every night?'