I woke in my sister, Kate, and her wife, Alena's bed, feeling surprisingly rested for everything we had gotten up to the night before. I felt around myself and was surprised to reach out and not feel a body next to me. I rolled over and blearily looked at my watch, and saw why. It was almost eleven o'clock in the morning!

Blessedly it was a Saturday, and I had no where to be and nothing to do. Well, except act as the breeding stud for my sister and her wife. It was the first time her ovulation fell on a weekend, and we had talked about taking advantage of...