I remember going to the library and getting the callout from the catalogue. I went to the stacks and reached for it. Amy reached for it at the same ti...e. Next ensued a brief tug-of-war -- which I won, by the way." Congratulations." No need to sneer," he replied. "We decided the civilized thing to do was to share it. So, we spent long hours at the library together, working on our projects and passing the book between us. Then, one Saturday night after the library was closed she invited me to her. I lay there for about twenty minutes to see if I could get back to sleep, but it wasn’t happening, so I slipped out of bed. Everyone else was fast asleep, and I grabbed a towel and some soap and headed for the bathroom in my shorts.The bathroom was an interesting experience since it was an all-girls school and was designed just for that purpose. There were about ten toilet stalls, five each lining the left and right walls. The back wall was one continuous mirror and counter with about ten sinks. Maine pehle hi didi ko bol diya tha ki aaj woh hamari seva karegi jab hum match dekh rahe honge. Aur khane pine ka sab intzaam karegi.Thodi der baad didi humare liye snacks layi aur serve karne lagi. Us time mere dosto ne meri behen ki garam jawani dekh ke khub anand liya. Jab behen jane lagi to maine didi ki gaand pe thappad maara jo mere dosto ne dekh liya aur hairaan reh gaye.Ankit: Rahul, bhai ye tumne apni hi behen ki gaand pe thappad kaise maara?Nikhil: Bhai, hume bhi bata ye kaise kiya.. I took my artificial member in one hand and began, gently, rubbing it up down the length of her pussy. While I couldn’t feel anything, except my hand on a rubber cock, MaryBeth was obviously having a great time and this made me happy. Sometimes I made little motions over her clit, other times, I teased the entrance. She was squirming below. As a mental turn-on as this was, I was still hesitant, the girth of my new attachment was considerable MaryBeth was such a small thing, could she really.