My little sister, Cilla, joined me in my bed, she asked is she could take off her nightdress, I said yes, of course, I loved looking at her little boobs, and then she asked if I would strip off too, which I did, I stood up and undressed, and at this point I got an erection. I jumped back into bed with her, but not before she asked why I was so hard, I told her that it was because I had seen her lovely little boobs.

She asked what had happened earlier with my mate, Charlie, I told her how we found a porno mag, and how we both got turned on looking at it, and then what had happened. She asked me if I fancied him more than I fancied her, I told her no, that it had all been something that happened in the heat of the moment. 

She asked me if I wished that she had a cock, so I could suck hers too, I toul her that I only wanted things between us, and that it had been something that would only happen once. Then she cuddled into me, and told me that she was happy that I only wanted her.

By this time I was so hard, I could feel myself getting ready to explode, her soft body against mine, and her tiny little boobs rubbing against me. She told me that she was slippery between her legs, and that I needed to dry her. I asked if I could touch her, to see if she was really wet, or just imagining it, she said yes. I reached down, and felt between her slightly parted legs, she was Very wet, it felt great to have ny fingers down there.

She told me that if felt really nice, me touching her, and she asked me if I wanted her tou touch me too, I said yes. it felt do great while she was rubbing my cock, I got so excited, and felt the same as when Charlie was touching me, I told Cilla that I was about to cum, she asked what was she had to do, I . asked if I could put my cock in her mouth, she said yes, it felt so much better than it did with Charlie, I was throbbing, and the more I touched her, the better I was feeling. The more she wrapped her little toungue round my cock, the more excited I got, I lasted about 2 mins, before I exploded in her mouth, she swallowed it all, but told me that it tasted funny, but would do it again if I wanted her too. 

From that time onwards I knew that there would be 2 mouths that I could cum into ........