I was 18 and in the 6th form - it was an era of Mayfair and Penthouse and a vivid imagination before the internet made it all explicit...leaving less to the imagination. My girlfriend Mandy was a year older, having left school previous summer, and was staying with a middle-aged couple, whilst she went to college, to do a medical secretarial course. We had arranged for me to visit on a Saturday and stay overnight, expectin...