Pa had three sons who courted the girls at the neighboring farm. It was hard for them to pick three out of the five girls to marry. The girls had two sisters left behind so Pa marries both the two remaining girls. (I guess you can do that in fantasies and on scattered farms). Pa had to trade his daughter Annie in marriage to Zeke, the father of the 5 girls. Who gets which girl Pregnant is the essense of the story.
A spaceship is going to colonize a new planet. Towards the end of the trip, a major goal is increasing the colonist population rapidly. To conserve resources, people spend most of their time asleep, often awakening just long enough to procreate. Then Jason is found to have a gene which makes him the preferred father for every new baby. 'How do I fuck thee? Let me count the ways.' Emotional positions, not physical.
Betty is a 60 something gal who loves sex and especially likes to entertain herself with young men, two at a time, while riding a cross-country train. Climb aboard because Betty likes to kiss and tell.
Gabby is a sexpot trained by the most depraved sexual addicts. She tires of her lifestyle and marries the new Brazilian Ambassador. After the honeymoon has worn off, she reverts back to her erotic ways and learns new tricks in her new home.
Molly is dissatisfied with her name especially since she is considering a career in modeling. Her foster home experiences are behind her now and she is in the fast lane of sexual exploration. Thank goodness she has the Reverend to cleanse her body with his beautiful cock of Redemption.
I couple married unsatisfactory marrieage and the search for incentives to keep thir marriage working. They explore group sex, swinging, and finally a threesome with a small surprise. There is lesbian sex and the wife's change of mind about her sexuality.