"On occasion, adults who had no living family members would seek to be adopted into another family. Sex with adopted parents or siblings was seen as a lesser substitute for incest, but it was still a step above excest."
"Oh yes, how Daddy loved breeding me and sister both within a year of each other, and of course once we were along past morning sickness and the preggo hormones kicked in, then it was like a 24/7 fuck-fest!! He-he!! ♥"