He took hold of her shoulders and slowly turned her over on her back allowing the bikini to fall on the ground. Gabby knew she had to stop this immedi...tely before it went any further. She was furious with herself that she had allowed it to go this far. She was just about to protest when Vince kissed her deeply plunging his tongue into her mouth. His tongue sought out hers and he had her reeling in passion. At that moment she was resolved to allow him to have his way with her. It just felt so. I pulled on the bow of her bikini top which fell to the floor releasing what I can only describe as beautiful big soft breasts, that were perfectly shaped and sized and begging to be licked and sucked. Sam leaned back encouraging me to rub and play with her fun bags which I did. I squeezed and fondled them pinching nipples. She moaned reaching down into my shorts and I felt her fingers slide around my burning hot and rock hard shaft. She pulled down my shorts and my cock sprang free much to. How could I have missed it? The benefits of the "Third Helix" are to assert dominance of each of the strongest genes in the DNA structure. When it came to Chromosome 23 (the one which determines the sex of a person), it took the information from the strongest gene, the X chromosome.The main difference between men and women is that on the 23rd chromosome pair a man carries an XY combination and women carry an XX combination. They are called this way because of the shape in which they look under. They were real old hippies in every sense. Long greying hair, ethnic clothes and always smoking hash and weed. I really enjoyed their company, so it was pretty much inevitable that Crystal and I should join the two elderly hippies in bed. I'd never had sex before with people old enough to be my parents, so this was a first experience for me but not one I made a habit of until I was pretty much that age myself. I can't imagine Zack and Liz would be up to such a vigorous foursome nowadays,.