That work was just outside the Purdue Campus. The time period was the hippie-dippy era of 1970. The wife was a laboratory department head in life scie...ces at Purdue. She did the standard duties and kept the labs in order. On breaks and coming to and from work, she ran – in a nicely abbreviated outfit. Everyone on campus knew of that blond-headed sleek runner. At the same time, the wife was already an experienced swinger. She really enjoyed sex.So, when she began running past a newly opened. I looked on her and she said, "Sir, I hope Ms. Jane has briefed you that we have accepted your proposal and I want to personally reassure you that Daina and I will both be fully obedient and subservient to your wishes and do everything you say, and I am sure we can make you love us, we will be such good girls." Well then, that's settled," said he. "Come over and sit upon my knee," I commanded. She rose immediately and gracefully came over to me, her face crimson, and sat upon my knee. She was. I decided the best way to hide it would be to be in the water and quickly jumped in the pool. Hiding wouldn't be a problem as I hit the cold water! The pool wasn't cool, it was cold! I think everything shrunk instantly. My sister was just lowering herself in to the shallow end and made some great expressions as she held her hands up above the water that was just above her navel. I stood there shivering against the side of the pool as I watched her. Then I noticed her nipples pressing hard. I'm actually shaking now - so close! I grab that blonde hair in both hands and go for the finish, forcing her head up and down while I grind my cootchie ruthlessly over her luscious, pink lips. She's loving the rough treatment, whimpering and moaning, frantically holding my hips while I fuck her face with a vengeance.I know I can't last long like this, and I don't. Before I know it I'm cumming, straining hard as I jam my cunt deep into her open mouth. "Eat it, eat it!!!" I cry, and she does.