She was so full of sex that she did not need any arousing actually. She began to moan at his touch and he kept on rubbing her cunt. He was licking her...ass cheeks while rubbing her cunt lips and clitoris. Her eyes were closed shut due to excitement. My cock was hard as steel rod but I could not touch it as my hands were tied behind me to the chair. This was torture. How I wished to jerk my cock.She began moaning……….she was telling, “Ahhhhhhhhh ahhhhhhhhhhhhhh umm mmmm haaaaaaaaaaa orrrrrrrrr. ” I had a pair of thin cotton shorts on and feeling him pressed up against my backside was starting to turn me on. Moving back away from me, he coached “ Go ahead, give it a shot.” I looked at him and set my feet as I turned back to the screen. Taking two steps forward, I swung my arm in a gliding motion and , sure enough, I bowled a strike. Teasingly he said “Ooh, look at you. Guess I’m in trouble now. Why don’t we add a little wager to it.” I was already getting a little excited as I answered. " Did you like it?" I dunno. It happened too fast."Bill stuck his tongue in her ass again, this time a little longer and a little slower."How was that?" That felt weird." Do you want me to do it again," he said looking around her when she looked back at him."Okay." Haven't you ever had you ass licked before?" No, that was the first time anyone has ever licked the inside of my ass," she said with a laugh. "Where no man has gone before, you're the first to put their tongue where the sun doesn't. They were two sisters both are elder than me in them the elder was a fatty I call her Motti initially I did not spoke to them but slowly we became good friends in a very few days.To my luck one fine day her family had left her alone and gone to their relative’s home which was far away from the place we were. She was so innocent and coward and after they left she started crying alone by fearing that something may happen to her which my mom saw and asked me to console her. So I had gone to her.