I was appalled that this child was so used to her parent's lovemaking that she was only worried about their brittle bones. I'd only ever heard my pare...ts once and that had traumatised me for weeks until my sister had explained things to me.She hesitated and then plunged on, apparently unembarrassed, "Have you been making love?" she wanted to know.I looked at Catherine again but she was challenging me to sort this one out with her sister. "Yes, we have. And we're going to get married," I. The pussy lips transformed into a tight, hot ring around my cock shaft as I slide full length into her hot, burning, love pot. She shook her head, whimpering noises rising to an almost wail, as I began to fuck her from back like a wild animal, struggling to keep it slow and shallow.Her moaning wail was slowly replaced by more animal like grunts, and I began to determine words, as she chanted between her gasping breaths, each timed to my thrusting cock. “Fuck. My boy. Come to me from back. Fuck. Santa is waiting for his Elf."My cock grew further.Passing me what she had bunched up in her hands, she continued, "You best look after these for a while".It was her panties."My Naughty Elf, aren't you", I responded with a grin."Well, if I am, I wonder what Santa is going to give me?!"We headed towards the members only area. Going through the door, thankfully no one was in there but for Santa, who was sat on a padded bench in the corner of the room.Zoe turned to me and said, "Take a seat. "Bill blushed slightly, "Well, uh, I guess I can't fault him for wanting that, either."Suddenly realizing what she had said, she threw her arms around him, "Oh, Bill. I'm sorry. That didn't come out right." Then, she smiled, "Besides that, you definitely did not chase me!" She snuggled back into his chest.He responded softly as he stroked her hair, "We are all entitled to a mid-life crisis. I'm easily old enough to be your father. Can't get away from that. When I'm around you, I know exactly.