My Sister-In-Law My wife was away for the weekend on a business trip. As was usual for me when she traveled, I stayed up late watching T.V. and having a few beers. I then slept in and got up around 10:00, made some coffee and lounged around the house trying to get up the energy to do some yard work or repairs. On this particular morning, I had had an unusual dream about having sex with a strange woman and as a result I had a raging hardon when I woke up. I took a piss and went to get a cup of coffee. I sat down in my housecoat with the uncomfortable feeling that I was going to have to relieve my sexual tension with a quick hand job. I decided that I might a well watch a porno movie that my wife and I had bought a couple of months earlier while I was doing myself. It was still early in the morning and I didn’t think there would be anyone out to interrupt me so I dug the movie out of the dresser and plugged it into the VCR. Our TV is downstairs and I was slouched in my favorite chair with my back to the door and front window. I was watching a scene of a big-breasted woman who was sucking a large cock. I was absently stroking my own cock and just starting to get warmed up when there was a knock at our front door. I damn near shit a brick I was so startled and I quickly covered up my shriveling cock while I madly grabbed the remote to stop the movie. Thank God I had the sound turned down. I jumped up and made my way to the front door, meanwhile trying to regain my composure. I peered out the side window and was surprised to see my sister-in-law Theresa standing there looking a little tattered. I opened the door and said "What brings you here so early in the day?" She said that her husband was out of town for the day and she had a water leak in her basement and she was wondering if I could go over to fix it. I had no choice but to agree to see what I could do. I invited her in for a cup of coffee while I got changed. When she was seated at the table with a steaming cup in front of her she asked what I had been up to this morning. I told I was watching an old move but that it wasn’t too interesting and I was just killing time. She asked which one I had been watching, as she needed to do something tonight while her hubby was away and she might want to borrow it. I told her it was a 'guy movie' and she probably wouldn’t like it. She asked why and told her it had some sexy scenes in it and was kind of adult oriented. I was pretty embarrassed and she could tell I was red faced. She continued to grill me on the movie and then she asked if she could see it. I finally broke down and told her it was a porno tape and she probably wouldn’t like it. She kept pestering me about the movie and finally she admitted to me that she had never seen a porno movie and she was very curious to see what they were about. I noticed through her thin blouse and bra that her nipples had hardened up a bit as we were talking and I began to get the idea that she really wanted to see the movie and maybe was getting a little turned on by the idea. My sister-in-law is a rather attractive woman with large breasts and narrow hips. She had silky blonde hair and a pretty face although you wouldn’t call her beautiful. I must admit I had kind of lusted over her for several years but she was rather devoted to her husband, as I was to my wife, and I know it was pointless to hope that anything would happen. I relented and against my better judgment went into the living room and again sat in my chair. Theresa followed me and sat on the couch that was across the room but still afforded a good view of the T.V. I notice the curtains were open and I got up and closed them so nobody could see in. I began to wonder what she had seen before she knocked on the door so I asked her if she had seen anything unusual before she came in. She said she hadn’t noticed anything other than I had been watching TV. I asked if she was ready and she said she was so I plugged in the movie, took a deep breath and settled in to my chair. My chair and the sofa were sort of facing each other so I could see the couch from the corner of my eye. The movie started from where I suddenly stopped it with the image of the blonde sucking the huge cock immediately springing into view. I heard a small gasp from the couch so I peeked over and saw Theresa sitting forward intently staring at the screen. I looked back at the T.V. where the blonde was now rubbing the cock over her large breasts. My cock began to harden and I became aware of another problem in that I was still in my bathrobe and it wanted to fall off my lap. I had taken off my underwear earlier and my stiff cock now threatened to spring into view. I pulled the two sides together and surreptitiously gave my cock a rub while I was doing it. I glanced over and saw that Theresa was still watching the movie but that she had unconsciously began to rub her hand over her right breast. I noticed that her nipples were getting hard and poking through the thin material of her blouse. By this time the blonde on the screen was getting pumped doggie style and she was really getting rammed hard. I’ve always enjoyed the sight of a woman’s tits wobbling as she gets pumped hard and as I was concentrating on the action I realized that I had been rubbing by cock and in the process my robe had fallen to the side and my hard cock was in plain view. I glanced over at Theresa and she was leaning back on the couch and she had undone a button on her blouse so her hand would have easier access to her bra-covered tits. She was rubbing the nipple of her breast with one hand and she glanced at me, smiled shyly and said that if I was enjoying the movie then I should keep doing what I was doing as long as I didn’t mind if she did the same. It suddenly occurred to me that this could get pretty interesting. I told her that I didn’t mind and she could do what she wanted. By this time the actor had sprayed a huge load of cum all over the blonde’s back and the action had moved on to two naked lesbians kissing each other. This also turned me on as I have always enjoyed the sight of two women getting it on. I began to stroke my cock a little harder and moved my robe so it was completely out of the way and my rock hard cock was in plain sight. I peeked over at Theresa and she had opened another button of her blouse and was now toying with an exposed breast. The sight of her huge soft breast with her large turgid nipple twisting in her fingers made it very difficult for me not to blow my load right then and there. She was looking at me and smiled. "I love seeing your cock," she said to me "I like seeing your breasts. I would really like to see both of them if you wanted to make yourself more comfortable" I replied. "Do you really want to see them?" she asked coyly. "Of course" I said "I’ve wanted to see them for years. I’ve dreamt about them". "Really?" she said. "I can’t imagine why". "Actually, I’ve dreamt about seeing all of you" I replied "But I never thought I see any part of you." At this she leaned forward and undid the last two buttons of her blouse and I could now the entire fullness of her bra clad breasts. She reached up and undid the clasp in between and her full round breasts swayed free. They were everything I had dreamt of and more. The full round nipples were puckered and hard and they protruded high and firm even though she’d had a couple of kids years ago. I continued to stroke my raging hardon and she played with her nipples with one hand and dropped her other hand to her jeans covered pussy. "If you keep that up I’m going to make a huge mess," I said. She shivered and began to rub her crotch harder which brought me even closer to cumming. "Would you" she asked. She stood up and undid the button on her jeans and pulled the zipper down. I slowed the stroking of my cock because I wanted to see what she would do. She shrugged her jeans down to her ankles and sat back down on the couch. She still had her panties on but they didn’t leave much to the imagination. There were even a couple of golden hairs sticking out and I could see she had a big wet spot where she was gushing wetness. She slid her hand under her panties and I could see her fingers playing with her clit. She closed her eyes and began to moan softly. I stood up with my rock hard cock sticking out and walked over to where she was as I continued to stroke. She opened her eyes and the sight of me standing close to her seemed to excite her even more. "Would you cum all over me" she pleaded and she pulled and pinched her nipples with one hand and rubbed her clit with the other. Her breasts swayed and wobbled as she pulled on them. Her breathing quickened and she began to frantically rub her clit. My balls tightened and I was close to the brink and I watched her hips buck and tits sway. I came closer and closer to orgasm as she frantically rubbed her clit. Suddenly I exploded and a monster shower of cum landed all over her breasts and stomach. As she felt my cum land on her chest she heaved up and cried out in her own explosive orgasm. I continued to spurt gob after gob of cum on her tits as she jerked in the throws of her own orgasm. I looked down and I said "That’s what a porno movie will do to you!" She looked up at me and smeared my cum around on her tits, lifted her fingers to her mouth, tasted the sticky fluid on them and said "I could get used to this. Do you think we could do this again some time?" "I think so" said I as I began to ponder the possibilities.