My wife and I have been together for over 15 years and continue to have sex 5-6 times a week. That was until I pulled a muscle last week while doing her doggy style. I didn't realize how bad it hurt until I tried to stand up. I couldn't stand up straight or take a deep breath. Because of this injury her mother came down to help sit with the boys while my wife picked up some of the chores I usually do. Since the muscle pull my wife hasn't offered sex, handjobs or a blowjob. She sais she wanted me to heal up before she hurts me again. Over the last day or two the pain has decreased to almost none. For the first time in several days I rolled over onto my stomach and didn't hurt at all. This morning before my alarm clock went off for work I had rolled over onto my stomach and landed on my very hard cock. This isn't unusual for a guy but this one felt extra good as I wiggled around driving it into the mattress. I thought about grabbing some lube and waking the wife up as I forced myself into her but my alarm went off before I could. I got out of bed and stretched a little and boy did it feel good to not hurt in my ribs. I went in the bathroom and shaved and showered before getting dresses. When I started getting clothes out of the closet I remembered I had a meeting today with a customer and that I needed to wear a nice pair of slacks. I looked for them but soon realized they must still be hanging in our laundry room. I wrapped a towel around my waist and headed to get them. When I got back there noticed a pair of my wife's thongs and couldn't help but pick them up and smell them. Unfortunately, they were clean but I still got a hard on from it. I stood there for a minute or two before I dropped the towel and started rubbing my cock. I was really getting into it when I heard a nose and froze for a second. When I didn't hear anything for a while I convinced myself it was my wife's little dog. I start stroking myself again and could feel beginnings of an orgasm when I looked up and saw my mother in law standing there with her mouth hanging open. I jumped and reached for my towel but she stopped me. My mother in law isn't much to look at and I have never once thought about fucking her. She told me to drop the towel and let her watch me. I said no but she kept on and honestly I love being watched as I masturbate so I gave in. I started stroking my cock slowly and gradually picked up the pace while she watched. After a minute or so she moved closer to me and got down on her knees. She said she wanted a better view. Here she was 6 inches from the tip of my cock as I stroked it. I felt myself building to a climax and she knew it to so she reached out and stopped me. She took my cock into her mouth and sucked me like I had never felt before. She didn't have her dentures in so she was biting down on my shaft and taking me all the way into her throat. I was in lala land when she stopped, stood up and raised her gown exposing the hairiest cunt I had ever seen. I swallowed hard and said this was taking things way too far. She said fuck me or I tell so I pushed her up against the washing machine and drove my cock balls deep into her in one motion. She was wet as hell but I still think it hurt her some. I didn't hold anythin back. I fucked her harder and faster than any pussy I had ever had before. It didn't take long before she was cumming. I had to cover her mouth to muffle her moans. She fell limp on the washer so I pulloed out of her cunt and pushed the head of my cock into her ass. She tensed up a little but I kept pushing until I was all the way inside her ass. She said she had never done this and begged me to stop but I didn't. I pulled most of the way out and slammed my full 7 inches into her ass. I built up to a steady rythim until I felt I was going to cum. She begged me not to cum in her ass but I just pushed in as deep as I could get and blew my entire load deep in her ass. She came as I did and we both nearly fell to the floor. She crawled up on her hands and knees and said she had never came that hard in her life. She said she had to have more of that but I said not with me. I eased back to the bathroom, showered again and got dressed to go. She and my wife were in the living room when I came out to leave. She looked at me and smiled as I kissed my wife bye and left.