Dad's progress didn't look good - he was still weak as hell after three months - we didn't know if he would ever again plumb anyone's depths. But that...didn't keep us from trying to get him laid.Mom finally decided not to lose her husband to despair and practically raped dad, one night, and despite his inital reticence, he found his equipment still worked fine!But dad had no strength left for either of us twins, so we continued to cherish our sessions with each other, dearly.We had our own. Joseph, how long have you been doing this with your mother?”“This is my first time in her butt, Dad, but about two weeks or so. I heard she wanted another baby, so I thought I would help out all I could,” I said. I was thrusting in and out of her very roughly while our discussion was going on. She was more embarrassed than I was.“Well, you aren’t going to get her pregnant that way. Mind if I join you two? Lean back honey ... while he’s in your butt, I will do what I can inside your beautiful. He had me strip down and lie on my back on his bed. He stripped off his pants and climbed on the bed. He spread my legs and came between them to lay on top of me, our cocks meeting. I guess he could see the questions in my eyes because he said, “Just relax, there wont be any penetration, we are just going to hump and cum. I think you'll like it.”He looked me in the eyes for a while as he started to slowly hump me, our cocks rubbing against each other. It felt really good. Then he was going. And she didn’t move. I did this slowly until I was able to look at her boobs. I then took them both out and touched them and I was so hard my dick was hurting like hell. Her boobs were so soft and big and white and I could see a few nerves that I wanted to suck it but I didn’t yet.While I was rubbing her nipples my fingers got wet. And I was puzzled. I was wondering how I am sweating when the ac is on. So I looked at her boobs to see her left boob was lactating. Milk was coming out and I didn’t.