The warm summer air was blowing around the yard. My mother in law was talking to me about some useless garbage that I really didn't care about. My cock was hard in my now untied shorts. My sister in laws young hard ass was facing me, while she floated calmly half on an inflatable air mattress. I nodded and agreed with the mother in law in an attempt to appease her and make her go to work and leave us alone.
My sister in law was in one of those great moods where she was horny and perverted all at the same time. I loved it because I was usually the recipient of her horniness. She had this knack of making me hard with just a glance. Her big C cup tits bounced around as she turned me on. She had already flashed her ass at me a couple of times in the pool and she was aware that I was rapidly joining her in her amorous mood.
I loved to remember the times that we had been naughty together and from what I read in her diary she enjoyed them too. She had spent several nights sleeping down stairs in my apartment before today, but I easily remembered I time when I had pushed the limits.
After a long afternoon of swimming and playing she joined me downstairs for pizza and chips. We did this on a regular basis as my little treat for her when her mother was working. We had encountered so many things together that I felt weird when she wasn't there. Tonight was different from all the others. Tonight she had worn her panties. Usually she chose not to. I was taken aback, but decided not to push the issue. I got changed into my usual attire, loose cotton shorts and a light t-shirt. After the food she popped in a movie for us to watch. Now she had already seen quite a few movies before she should have. So the choice of movies we could watch together was almost unlimited. She had seen more bad movies before she was allowed to than I had all together. As the credits started she jumped onto my lap and snuggled in. Her hands were dangerously close to my cock as it lurked just underneath her.
On several occasions she took the opportunity to graze my cock with her hands. She gently brushed against the head of it in a feeble attempt to fondle me. I, for one, was not even remotely interested in preventing her from grabbing hold of it and doing what ever she wished. In fact, I was always hoping that she would feel the desire burning so deep inside her that she acted on her own and made the first move. For her to be overcome with such emotions that were so strong that she couldn't control herself is something that had become a burning desire of mine. I was not so fortunate.
I made every attempt to lead her into a sexual situation but she resisted them all. I repeatedly rubbed my cock against her in an attempt to arouse her. I flashed my hardening cock. She ignored it. I was getting horny trying to get her turned on. I tried putting my hands on her leg and rubbing it. This usually started to get her going, but not tonight. I was getting frustrated, but still horny.
When the movie was over it was pretty late and she was complaining about how tired she was. She asked if she could crash on my couch and I readily agree. I went into my room and left the door slightly open while I changed for bed. I had positioned the mirror so I could she her in the living room. My mood was suddenly uplifted. She was watching. I took my time and allowed her to see everything I have. She watched my act for a few minutes. I was getting hard and my cock was starting to rise. I wondered if tonight was her attempt to drive me crazy and that all my advances where being refused despite how horny she was getting. I reached down and gently stroked my cock a few times with my back to her. I turned slightly in an attempt to show her more. I left my hand on my cock and continued to stroke when I knew she could see everything. I heard her gasp and glanced into the mirror. She was sitting in my chair looking straight at my cock. Her hands had disappeared into her pants.
The left hand was holding onto the waist band of the pants and holding them away from her body as the other worked furiously on her aching pussy. Seeing this, my cock easily became consumed with the idea of fucking her hard and often. No more rubbing or flashing, I wanted full deep penetration. I wanted to pull down her pants and force my face deep into her love box and eat her until she came again and again. I wanted to feel the lips of her shaved pussy dance with mine while my tongue flicked gingerly at her clit. I wanted to let my hands roam all over her ass and around her rosebud. Fingering her ass as I ate her was such a turn on. I released my cock as I was stroking it vigorously and was about to shoot my load all over the carpet. I glanced up at the mirror for confirmation of her passion and she was gone.