While the girls were all pregnant, none of them were too keen on having sex. Katie enjoyed sucking my cock every so often, but there were times when I was not getting any action at all. 

There were many nights when I would be in my bed, alone and I would have to settle for just wanking myself. I had learned how to get the end of my cock into my mouth, and so many times I would lick the tip of my cock until I came into my own mouth, it was fun, but would have been better if it had been on of the girls sucking me off.

It was during one of these sessions that I suddenly sensed that I was being watched. I stopped licking my cock, and looked up. Mum was standing there watching me, I saw that she had her hand between her legs and she was rubbing her pussy. She asked me how long I had been able to suck myself. I told her I had been doing it for a couple of months. Mum came over to the bed and sat beside me. She asked me if I would like her to finish me off, then took off her nightdress and got into bed with me. She got into a position where she could suck me, and allow me to feel her pussy. Mum was so wet, I asked her why she had told me she was too old for sex, she told me she did not think I would be interested in an old woman like her, when I had my pick of the younger girls. I told her I loved her, and that I had always loved having sex with her. 

Mum seemed pleased with this and started to suck me harder and faster, as I finger fucked her, and soon she had her mouth full of my cum. She got dressed and told me next time she wanted me to fuck her.

A few days later I was lying back in bed wanking, I had my eyes closed, thinking about Mum, and what I was going to do with her next time we were together. Again I felt that I was being watched. Mum, I almost came at the thought. I opened my eyes, to see her, hoping she would be naked, and desperate. I looked towards the door, and saw Guy standing there, naked, and wanking his long thin cock. It was a bit of a disappointment seeing him there, when I had been expecting to see mum, but my cock actually got harder seeing his hard cock. I told him to come and join me on the bed.

We sat next to each other so we could wank each other. Feeling his cock in my hand was great, and when he started to wank me, I thought I would cum straight away. He asked me to take my time, as he wanted this to last as long as it could. He then knelt between my legs and started to suck my wet cock, he was wanking himself as he did this. It was then that I realised that I wanted to suck his cock, so he got onto the bed, so we could suck each other. 

Guy grabbed the back of my head forcing his cock deeper into my mouth, I could feel the tip touch the back of my throat and started to gag. I took his cock out of my mouth and started to lick it, he was producing so much pre cum, I was having difficulty in swallowing it all. He took my cock out of his mouth too. We lay there licking each other and stroking each others balls. I was loving this experience. 

Suddenly we heard someone ask if we were enjoying ourselves, it was Mum, she was standing at the door, naked, and had her fingers deep inside her pussy. I asked her to join us, and she came over to the bed. Guy's cock was now a lot smaller than it had been, mine was as hard as it had ever been. I asked Mum if she wanted fucked, she told me after what she had just seen she was so horny. 

I lay back on the bed, then Mum lowered her soaking pussy onto my cock. Guy said he would leave us in peace, but Mum told him to stay and reached over and grabbed his cock, within seconds he was hard again. Mum was grinding her wet pussy deep onto my cock, as she wanked Guy. Mum then leaned forward and took his cock into her mouth. Watching Mum suck another cock while she was riding my cock was such a turn on, I knew I was going to cum and told her. She started to suck him harder and soon her pussy was full of my cum. I saw Guy tense up, then watched as Mum took his cock out of her mouth as he started to cum, covering Mum's face, mouth, boobs and hair with it. Mum asked if anyone would clean her, and we both started to lick his cum from her body.

From that night, until the girls had their babies, the 3 of us would spend a few nifgts a week together. Guy fucked Mum the next time we were together, and after that, we discovered we could both get our cocks into her pussy at the same time, so quite often we did this, the feel of our cocks rubbing together while we fucked Mum was such a turn on that we usually came very quickly, and almost always at the same time.

Mum also loved sucking our cocks, and sometimes she would alternate between sucking us, then getting her mouth full of 2 loads of cum, she always swallowed it. Mum asked us on occasions to ass fuck her, we would take turns of doing this for her, usually it would be Guy who was in her ass, as I fucked her pussy.

By the time the babies were born, Mum told us that as much as she loved sex with us, she hoped that we would start having sex with the girls, as she was getting too old, she was only 68, and I continued to fuck her every so often. 

There would be a few occasions when Mum's friend Sue would visit, and the 3 of us, sometimes Guy would join us, and we would have fun together. At this time Sue was almost 76, but Guy and I loved fucking the 2 of them...