I had just finished shaving and was soaping up my now semi erect cock when i here banging on the door i thing who the hell is that but go back to soap...ng up Bang bang bang goes the door again im pissed now so i open the window of the bathroom and shout yes . O hi comes a females voice as she moves back into view she is a blond slim women early 20s looks quite fit from the angle im at i can see down her airtex shirt top to her ample tits there maybe a 32c at a guess and my cock springs back to. I push out my tongue and start gently flicking it over his balls, before taking the hair between my teeth and gently pulling. I give one more long lick, starting at his perineum, up the centre of his balls and then I have reached the base of his hard cock. I lick from the base to the tip, press my lips over the head and then travel back down with my tongue. I turn my head to the side and take him into my mouth, again travelling to the tip, squeezing it between my lips and moving to the base. I stood for a while and looked at them. They had defiant looks on their faces and I knew if I said anything they had the perfect come-back. Never mind what were they doing there, What was I doing there?“Whoops!” I said. They looked at each other and laughed.“Well that’s sorted that out,” Jenny said. “Coffee everyone?”She went to the kitchen and I walked over to where the boys were sitting.“Sorry boys,” I said. The y both hugged me and I noted hands where they shouldn’t be but said. She is such a remarkable sister. Despite the warm water cascading off our bodies, we decided first to get Lynn out of the picture. We talked about it while washing each other.With the brother/sister sex stories, I had been reading, every time they got in the shower together, there was either a fuck against the wall, initiated by the brother, or a blow job ... with the sister dropping to her knees and sucking him until he blew on her face or down her throat.We got out of the shower, me first so.