As usual our discussion became louder as we both stuck to our guns. Part of our friendship was based on the ability to argue like mad without any real...animosity. To keep him from asking too many difficult questions and to try to maintain a very dubious high ground I told him I didn't believe him either.We were almost shouting when he described how he'd spied on his elder sister in her bedroom. Once again, with a morality it is easy to hold when it's not you being tempted, I said loudly. "That's. I knew my sister and her husband was due in sometime to day with there three kids. Sue was the workout queen of our family and had a butt almost as great as Rona’s. Our older sister Kate wasn’t sure she could make it.Mom and Dad both worked till 5 so the sound of the shower was probably Rona. I heard the shower turn off just before leaving the bedroom. The bathroom serviced three bed rooms and was huge almost as big as one of our bedrooms at home.I opened the door to the bathroom. C confidently strode towards them as A and K stood to greet her, they met with a little trepidation, cheek kisses and hugs, C shrugged of her coat to reveal her stocking clad legs, her skirt was tight enough that you could visibly see the suspender belt; her womanly attributes were accentuated by the tight jumper she had on. C sat down next to K as A shuffled to allow her into the booth.The bar man arrived with another round of drinks as the idle chit chat continued to flow as they discussed. I sat her in the shower chair and told her "Open your legs, and then spread your cunt lips with your fingertips!"I then began to pee, first a small dribble and then a stream of golden yellow coloured piss, aiming at her clit. I took my cock in hand and directed the flow up towards her tits, when suddenly she shot forward and collected a mouthful of my piss in her mouth. Looking me straight in the eye she swallowed and said "Now forever part of you will be inside me!"I smiled at her, finished.