My name is Matt and I am married to a wonderful woman named Linda. We have been married for about 5 years. Recently her parents were down for a visit and asked me if I could help them out. John asked if I could travel back with them to Ohio and help them for a week to set up their new business. My Father-In-Law is a very intelligent man but he doesn't know the first thing about computers so I agreed. My wife teaches middle school so she couldn't just take off so she stayed behind. My in-laws always travel in their little motor home. When I say little I mean it is really small. It is the kind of motor home that looks like a converted van. When your driving down the road the only place to take a nap is directly above the driver. There is a single bed where you can get some sleep. If everyone wants to sleep, you have to park the van and convert the driver and passenger area into a bed. In the center of the van is a small kitchen and the bathroom is in the rear. The first day went well, we drove about 8 hours and we decided to have dinner in a small town we stopped in. After dinner we found a KOA campground and settled in for the night. I slept above them in the single bed while they slept in the double bed. I get along great with my In-laws. For one they are both easy people to be with and secondly, my mother-in-law is a hottie. She is about 44 years old but the years have been very kind to her. She stands about 5 foot 9 with long killer legs. She is always well tanned with shoulder length curly blond hair. Beautiful face and very ... very large breasts but her best feature has to be her butt. I have seen her many times over the years in her bikini and she has one of those delectable round bubble butts men drool over. The next morning we all got up and I take over the driving duties. Nothing eventful happens, we just make small talk. I have always been the type that gets sleepy after driving a while so I asked John if he minded taking over so I could take a nap in the bed above. John of course said no problem and I pulled over and he started to drive. I went into the bathroom and reappeared in just my shorts. When I sleep I don't like to have a shirt or pants on. I crawled above them and laid my head on the pillow. About 10 minutes later Carol asked if I minded sliding over, she was tired also and wanted to lie down too. Keep in mind this is only a single bed and I am a pretty big guy about 6 foot and 225 pounds. Of course I agreed, I knew that since the bed was so small I would have a great opportunity to be touching her accidentally. She was wearing shorts with a short blouse and bra. She climbed on top. I tried my best to act like I was as far over to the edge as I could but the truth was I really wasn't trying to hard. The only way for both of us to fit up there comfortably was for us to spoon together. So here I was lying in bed with one of the sexiest woman I know and I had to make sure I didn't get a hard on and embarrass myself. I did everything I could from thinking about football to my work. Eventually it worked because I drifted off to sleep. We must have been driving a while because when I woke up it was dark. My father-in-law was still driving and Carol was sleeping soundly next to me. Her butt was up against my groin and I couldn't stop myself from getting hard. Since she was asleep I found it quite a turn on to feel my hard on rubbing up against her ass. I position myself so my cock was wedged between her crack. I let my face caress the back of her hair. I took a deep breath and took in her essence as I lay there getting hornier by the minute. I was in pure ecstasy and I didn't dare move. My father-in-law hit a pothole, which shook the van and woke up Carol. I pretended to be asleep because there was no way she could not realize that my hard on was poking her in the ass. I expected her to slowly move away but the most surprising thing happened. Absolutely nothing. My mother-in-law realized my cock was wedged between her cheeks and she didn't move away at all. In fact almost imperceptivity I could feel her wiggle her ass with the slightest movement. My mother-in-law was wiggling her butt on my cock. Of course this got me as hard as a man could get. I felt Carol's hand reach back in between us and slowly and carefully reached for my cock. As soon as she touched it, she pulled her hand away as if it was on fire. She waited a few minutes and put her hand back on my cock and this time she left it there lightly feeling it's entire length. She then pulled her hand away and slowly pushed her ass back a little more making sure my cock was wedged deep inside her crevice. The only thing between us was her thin panties and shorts and my shorts. She stayed in that position for a torturous 20 minutes before she got up and went to the bathroom. I can only imagine she was in there getting off, thinking about her son-in-laws cock. I had a huge case of blue balls and when she got out I woke up and headed to the bathroom. I jerk-off thinking about my mother in law’s ass. I exploded all over the wall and had to clean up the mess. My father-in-law asked if I could take over and I drove for the next three hours before pulling over and we all slept in for the night. The next day we got into the same routine I drove for a while and then he took over. I went to the bathroom and took of my underwear and kept my shorts on. I was hoping to get lucky. Sure enough my mother-in-law said she was tired and asked me to move over, strangely before doing so she headed into the bathroom and reappeared a minute later. This time when she got next to me I noticed she was wearing a skirt. I pretended to fall asleep and when she thought I was asleep she scooted her butt and pushed it back into my cock. I felt her hand reach back and slowly lower my zipper. This wicked woman had been planning this little event since last night. Because when she pulled my cock out and put it next to her ass, I felt bare skin. She had taken off her panties in the bathroom. Now my cock was wedged between her crack and there were no clothes between us. I felt her reach in between her legs take a hold of my cock and ever so slowly rub it up and down her pussy. Then it happened, she took my cock and just rubbed the head in between her lips. Her pussy felt like it was on fire it was so hot. She lined up my head and aimed it at her pussy and slowly she started to push her ass back as my cock gradually entered her warm vagina. Oh MY god I was inside my mother-in-laws pussy. I couldn't take it anymore. I reached over and grabbed her hips and pull her ass back into my cock as deep as I could go. My father-in-law had the radio on; thank god he couldn't hear her moan as I pushed my cock deep inside. She reached back till she was looking into my eyes, her hand grabbed the back of my head and pulled my lips to hers as she kissed me very passionately then she whispered into my ear. "Matt I love your cock please fuck me like you fuck my daughter. I want to feel you cum inside me." I whispered back. "Oh Carol you don't know how many times I have thought about fucking you." "Mmmmm well stop thinking and start fucking." My hands glided up her stomach and under her blouse as they made their way to those beautiful pendulous breasts. I groped them, I pinched them, I caressed them, and I couldn't get enough. I fucked Carol for the next 20 minutes, very quietly of course but no less sensual. She had the most incredible pussy. It felt like a vice grip. She knew how to use it well. I could feel her inner muscles grip my cock as it devoured it. I finally couldn't take it anymore and I exploded inside her pussy. I stayed inside her for another 30 minutes as her husband drove. Neither one of us wanted it to end, so we relished in the fact that my cock was still inside her, slowly but methodically fucking her. She finally pulled away and got down to go to the bathroom. I don't know how she pulled it off but she managed to get down with her pussy filled with my cum and very lady like walk to the bathroom. Luckily for us her husband was busy driving because if he could have looked back he would have saw my cum dripping down her inner thighs. She stepped out and I climbed down and headed to the bathroom. When I came out John and I switched position and I drove for the next 5 hours. I found myself getting tired so I parked the trailer and we got ready to call it a night. I stayed awake most of the night thinking about Carol and if I would get another chance to fuck her again. The next morning we headed out on the road again, this would be our final day before arriving at their home. Unfortunately we didn't get another chance to fuck. We were only a few hours away from their home. As the trailer drove up to the house John told Carol that he needed to go into the office and check things out. He asked me if I minded unloading the trailer. Carol asked how long he would be gone so she could plan supper. And he stated it would be a couple of hours. And soon as John was out the door I snuck up behind Carol and my hands slipped inside her blouse and felt those wonderful breasts. She leaned back into me and let me kiss her neck as I caressed them. "Matt take me upstairs and make love to me." I swept her off her feet and carried her upstairs. I laid her on the bed and slowly started to undress her. I started with her shoes and stockings, as I took the second stocking off I caressed her foot slowly massaging it and bringing her foot to my mouth. I slowly but deliberately sucked her big toe into my mouth. "Mmmmm that feels so good Matt." I continued sucking that toe, she was really into it. I finally laid her foot down and reached for her panties and slowly removed them and then I helped her take her skirt off. I then unbuttoned her blouse and also removed her lacy bra. Those large breasts couldn't help but fall to her side. They looked delicious. I asked her to turn over and I walked into her bathroom. "Carol where do you keep the baby oil?" "Under the sink honey." I grabbed the bottle and headed back to bed. What a lovely sight. She was lying in bed with that beautiful ass staring up at me. I climbed on top of her and sat on her butt as I pored the baby oil on her back I leaned over and kissed her neck. "Oh Matt I never knew you were such a romantic. Linda is one lucky girl to be married to you." "Well thank you." I continued caressing her and massaging her back. Letting my fingers work there way down her back massaging her all the way to her butt. I took more oil and poured some on her ass. Watching it slowly slip in between her cheeks. Then I let my finger slowly follow the path of the oil until it reached her rosy hole. I slipped a finger in and carol squirmed with delight. She cooed as my finger penetrated her ass. I knelt between her legs and took both my hands and separated her cheeks exposing her rosy bud. I blew on it and the cold air sent shivers down her spine. As soon as I saw her goose pumps I let my hot tongue lick the outside of her ass. "Oh my god Matt, that feels so incredible." I continued licking all around her ass, then I spread her cheeks even further and my tongue slipped into her butt. Carol was moaning with pleasure as my tongue-explored areas that no man her ever licked before. My right hand slipped under her and played with her clit as I ate her ass. "Ohhhh Matt your going to make me cumm ... Mmmmm oh my god Mmmmm." Carol grabbed the side of the bed; her finger nails digging deep into the bedspread as she succumbed to waves of pleasure. "Ohhhh yes baby don't stop oh god." She was by now bucking her ass as I tried to keep up with her movements. I felt her reach back behind her and grab my hair and she took it and pulled it hard into her ass. The harder she came the harder she pulled my hair. With one final thrust she collapsed on the bed with exhaustion and totally satisfied. I made my way up her body and I was lying on top of her. I kissed the back of her neck making my way to her front. She turned her head and we kissed passionately. "Oh my god Matt, that was the single most incredible orgasm I have ever had." "Well I am glad I was the one giving it to you." "You have to promise me this is not a one time thing. I can't imagine never experiencing that again." "Don't worry Carol I plan to fuck you every chance I get." "Mmmmm is that a promise." "Cross my heart and hope to orgasm hahaha." "Mmmmm yes it is your turn baby. Move over and get on your back." I turned around and relaxed as I watched Carol slide down my body and take my cock with her slender fingers. She slowly and methodically worked my cock up and down playing with my foreskin as she did so. Every once in a while she would lick the top of my head as she jerked it. I couldn't take anymore and I put my hand on the back of her head and guided it to my cock. She let my cock slip into her mouth and I could feel her tongue dance all around my head. She was doing a marvelous job but I wanted to fuck her, so I pulled her by her shoulders up to me. She got the hint and lifted her body over me; her pussy was lined up with my cock. She took my cock and aimed it at her pussy. She slowly descended until her pussy devoured my cock inch by inch until she impaled herself on my cock. We both sighed when she had me totally inside her. She bent over and presented her breasts to my waiting mouth. I licked her nipples as she started to fuck me. I licked them, I bit them I devoured them as she fucked me. Carol started to really fuck me hard you could hear her pussy slapping down on my cock. I pulled carol down to me so I could kiss her. I could tell she was getting close and I wanted to be kissing her as she came. She started to fuck me furiously, and then it happened, as she was kissing me her body went stiff. She was in the midst of an orgasm. I started to buck up and down as hard as I could. She stood there like a statue enjoying her orgasm as I fucked my lovely mother-in-law. She collapsed on top of me and I continued to slowly fuck her. Oh my! Matt…haven't you cum yet." "No I wanted to feel you cum, don't worry baby I still going to fuck you good." I pushed her aside and turned her around. I got behind her and pulled her to her knees. I then took my cock and slapped her ass a couple of times with it before roughly inserting it deep into her pussy. "Ohhh that feels good Matt." "Ohhh yes Matt fuck me baby. Cum in my pussy. I want to feel you cum inside me." My mother-in-law was really turning me on; the more she spoke the harder I fucked her. "Ohhh baby slap my ass." I slap her ass until it turned red. The more I slapped it the more she wiggled. I was humping her good. I have never been so turned on. To be fucking the mother of my wife was such a turn on. This woman was insatiable. I grabbed her hips and she put her head on the pillow, which really exposed her ass to me. I felt my legs weaken. I couldn't take much more. She could sense I was close. "Oh yes baby fill my pussy with your cum. I want you Matt I want all of you. Cum baby cum ... Let me feel you cum inside me ... " As she spoke I exploded ... she sent me over the edge. I slammed her body down into the bed as I sprayed my cum inside her womb. I kept pumping my cum into her. I finally collapsed on top of her. She wiggle out and turned me over and took my cock into her mouth. Moaning the whole time she cleaned my cock. She finally climbed up and lay in my arms as we rested. "Wow Carol that was the best sex I think I have ever had." "Really?" "Yes Really!" "Oh Matt what are we going to do?" "Well we just have to keep it under wraps." "Matt I don't know what I would do if we couldn't make love gain." "Carol if we are careful we can keep doing this forever." Just them we heard the car pull up and we hurriedly got dressed. Don’t forget to read part 2