When I told my friend Klaus that I would be happy to look after his daughters and that they could stay at my place which was close to the beach over the holidays, I never realized what I had let myself in for. Being in my sixties and older than their father they often teased me by calling me granddad, I quite liked the idea of having two sexy granddaughters. Both were gorgeous girls I had known them for years and had watched their bodies develop into very sexy ladies. They were both identical twins and Klaus had told me that he was never able to tell them apart. I knew that Klaus was not their biological father, he was like the one who had adopted them when he married their mother. Now that he was back for good from the Army he was staying here with the girls and that also to stay. I coul