Yes to everything

"Ohh Yeess!", she exclaimed in ecstasy, "Yes I'll do it, I'll seduce our son while you take our daughter! Oh Gods, you have no idea how hard it was for me to hold out for this long, waiting for you to finally be the man I hoped you be! You had better deliver, all these years of being pure for you have been like centuries for me, so let's show each other how qualified we are to teach our children how to fuck!"

You took to the challenge as you grabbed her hips in your hands and forcefully put her on all fours on the bed, your cock harder then it's ever been. Then you started rutting her like your were trying to make another child, which all things considered you might get lucky.

The whole room echoed the sounds of pounding flesh and ecstatic moans. Between your growing and her howling people might think thier hearing pair of wolves mating, which to be fair isnt far from the truth. Upon reaching your climax you roar like an alpha male marking his bitch and her banshee howling showing her submission to you.

You both land drop to the bed, rather exhausted. You simply stayed put, basking in each other's warmth, letting sleep take you. Your last thoughts dwell on your daughter and if the pleasure to be had, once you figure out how to talk her into it.