Great Mom Pt.7

Note : This story is completely fictional!

It was getting close the weekend; I had taken the day off just to get a break. My children went out for the day so I was home alone. I spent sometime in the pool then I decided to lay out for awhile. "Hey Katie, are you back there?" At first I did not recognize the voice, I called back that I was. My brother came through the gate around the side of my house to the backyard where I was laying out by the pool. My brother is 6'2" and is built. We make an odd brother and sister combo when standing next to each other, I am about 5'1", petite body. My brother had stopped by, unexpectedly, his girlfriend and him were supposed to have gone out for lunch but she had to postpone it for a couple of hours. We talked for awhile, I was laying on a beach towel, my brother kept standing there, I told him to sit down several times but he kept saying he was fine. We both had sunglasses on and soon I noticed my brother must be checking me out and enjoying what he saw. I noticed a sizeable bulge in his shorts and his hand was in his pocket. My brother was doing his best to subtly adjust his cock so I could not see. So I decided to have a little fun with my brother, to get him more excited. I would sit up, stretch so I would thrust my large tits out, and my nipples were clearly hard and very clearly showing through my bikini top. I sat up, spreading my legs so he could get a look at my barely covered pussy. It was working quite well, I could tell how my brother moved around he was trying desperately to get his hard cock pointing straight up along his stomach, in line with his zipper, so I could not really see it. My brother then excused himself to go use the bathroom. I gave my brother a few minutes then I quietly snuck into my house to find him. I had feeling he may be jacking off. I found him in the down stairs bathroom. I quietly crept up to the door, luckily it was an older home and the door did not fit closely to the floor. I very quietly laid down on the floor and put my ear to the bottom of the door, it was almost a half an inch space. I was right, I could hear my brother stroking his cock and he was thinking about me, his sister. 

I have no idea for how long I just listened to my brother moaning and groaning. Every now and then he would moan out my name or just sister. Sometimes I would hear him say about me sucking his cock, my big tits or just how good of a fuck I am. Listening to my brother was really turning me on. Without even realizing it, I had slid one hand down my bikini bottom and I was already fingering my wet pussy. My other hand was instinctively playing with my tits. I knocked on the door, “Mark, are you ok? You have been in there for a while.” I still kept playing with my pussy. My brother yelled out, “Katie I am fine! I’ll be out in a bit!” “Sorry, I was just worried about you. I will be back outside by the pool.” Which was a lie, I was going to stay right there and get myself off while listening to my brother do the same. My brother was silent for a few minutes, which gave me time to keep playing with my clit. Then I heard my brother start back in with jacking himself off. He sounded more aggressive, I guess interrupted him close to getting off. “Damn Katie! I was about to fucking cum. Just like my sister, always talking when she should be quiet. I got a solution to that, my big fucking cock in her mouth. If only Katie wasn’t my sister, I would fuck her brains out!” He moaned and grunted a bit louder then I heard him say, “Fuck it! I would fuck my sister anyway, just once. She is so damn hot! Shit those tits are so big and her nipples! I would love to suck on them and fuck her big tits!” I wanted to open the door right then and there and fuck my brother but I was enjoying listening to him as I finger fucked myself. I was getting close to getting off, what sucked was I had to be quiet, I didn’t want my brother to know I was out there, maybe not yet. I figured Mark was close to cumming as well, just by listening to him and his grunting I could tell he was going to cum. 

I had pulled my tits out of my top and I was pulling on my nipples as I drove my fingers deep into my pussy. I could not hold back anymore and several waves of incestuous lustful orgasms rocked my body. I grabbed one of tits, held it up to mouth and sucked on my nipple as I came. I did my best not make any noise of the incredible orgasm I was having, thanks to listening to my brother jacking off. I heard Mark start to moan, louder and louder. “Oh shit, oh fuck I’m gonna cum Katie. Yeah fuck I’m gonna cum sis, all over your tits, your face and in your fucking pussy! Oh fuck, fuck…fuck yes!” At that point I could only picture my brother cumming, his cock spurting out his load of cum, derived from his incestuous thoughts of me. It sounded like my brother had a huge load from what he was lustful groaning out; “Oh shit Katie…oh fuck you are making me cum! Shit sis, I’m still cumming! Oh fuck, yes! Fuck this is great!” It made me smile with a lustful, deep seeded incestuous feeling knowing I was giving my brother the best orgasm of his life. When I thought he was done, I quickly put my tits back into my top and quietly ran back outside to the pool to act like nothing had happened. 

I got into the pool, I needed to make my bottom wet to hide the wet stain I had made from my orgasm. My brother came out a couple of minutes later, I asked him if he was ok and he said he yes, he was doing good. Mark flashed me a smile, which really turned me on because I knew what he was thinking but he had no idea I knew what he just did. I swam around for a bit as we talked about my kids, his relationship. I glanced at his shorts and I could see another bulge developing! He noticed it too as he tried once again to adjust himself so I could not see it. This was becoming a sexual torture to the both of us. The incestuous lust was nearly overwhelming in me and by looking at my brother, I could see it was at the same level too. I got out of the pool; my nipples were nearly thrusting through my now wet, skintight bikini top. I saw my brother glance down at my tits, focusing on my nipples; I couldn’t take it anymore I had to do something. “What are you staring at Mark?” My brother turned red embarrassed that I caught him looking at my tits. “Nothing Katie…um nothing.” “Bullshit! You were checking me out! You were staring at my fucking tits! Weren’t you? Damn it, answer me Mark, you were, weren’t you!” “Yes Katie…I couldn’t help it…you are so attractive…I am so sorry.” I thought I would have some fun now with my brother. “You fucking perv! I am your sister! Oh shit, look at you Mark. You have a fucking hard on! You little incestuous pervert! I am your sister and you are getting hard-on looking at me!” My brother didn’t know what to say, I had busted him cold. 

“Get the fuck out of here and into the house you fucking pervert!” My brother just stood there, totally in shock. “Go on Mark, get the fuck out of my sight!” I pointed to the door. “Get your fucking perverted ass downstairs. Do it now or I will call mom and tell her what a pervert, incestuous son you are!” I knew that since I caught my brother off guard, he would do what I said and not even realize I had just told him to go downstairs and not to leave my house. He went into the house just like I told him to, I quickly dried myself off and went in after him. Mark had done exactly what I said; he had gone downstairs. I came down the stairs and there was my brother standing by the pool table looking very nervous. “Katie…why did you want me to come down here?” “Shut the fuck up Mark! What the fuck is your problem, looking at my tits? Staring at my big nipples too? So, your sister has big tits and nipples. So fucking what! You are not supposed to get a fucking incestuous, lustful hard-on over your own sister!” As I yelled at my brother I backed him up against the pool table. I could see that my brother no longer had a hard-on, which made me disappointed. I pushed my brother back on to the pool table, he sat down on it, and his legs were hanging over the edge. “Katie, stop. I am sorry. You are blowing this way out of proportion.” “Oh really Mark! I don’t fucking think I am. I heard you in the bathroom, jacking off and thinking about me! I’m your fucking sister and you were jacking off to me!” My brother turned almost white, he was completely speechless. Then he spoke up, “Oh god Katie…I…I don’t know what to say. Oh shit I am sorry, I am so embarrassed.” “You should be you fucking incestuous pervert.” I caught my brother looking at my tits again.

“Damn it Mark, there you go again, looking at my tits!” “I…I’m sorry…I…” “You wanna see my tits, fine look at my tits!” I took my top off, letting my tits bounce free, my nipples were very erect, hard and pointing right at my brother. Mark just stared right at them. I held my tits in my hands, pushing them up a bit. “There Mark, take a good fucking long look at your sisters tits! Do you wanna know how big my tits are? Do you?” My brother stammered out a yes, still in shock that I took my top off. I massaged my tits a bit more before I answered. “They are 36C, not too hard, not to soft, nicely round. Look at my nice big areola and my long nipples.” I pulled on my nipples and then ran circles around my dark areola. I watched my brother almost begin to salivate, I glanced down at his shorts and his cock was creating a nice tent in them. “I bet you want to touch them, don’t you Mark?” My brother just sat there not knowing what to do. “Well you fucking pervert! You were jacking off in the bathroom, saying about my tits, fucking them, sucking on them, squeezing them. Do it you fucking perv! Come on, feel up your sister!” My brother reached out very slowly with his hands, I let my tits go and my brother lightly touched them at first. When I did not protest, he began to play with my nipples. He worked his fingers all over my tits with a gentle touch, then he clasped his hands around my tits and began to lustfully squeeze them. I let my brother play with my tits for a minute or two before I stopped him. I yanked his hands off my tits and I began to yell at him again. “I can’t fucking believe you just felt me up! Shit, you incestuous, lustful pervert! I am your fucking sister and you just went ahead and felt me up!” “Katie, you said I could.” “I was just fucking testing you Mark! I should call mom right now and tell her what the fuck you just did to your sister!” “Oh no Katie, please don’t! I am so sorry. Please Katie, I beg you, I am so deeply sorry.” 

I couldn’t take it anymore, I felt so bad for putting my brother through this. I decided it was time I made it up to my brother. Not to mention all this yelling was causing his cock to go limp again. I pushed my brother back down on to the pool table, “Lay down you fucking pervert!” At first my brother wouldn’t do what I said, so I yelled at him again. “I said lay down Mark!” My brother laid down; he raised his head up to see what I was doing. I began to undo his shorts as quickly as I could, “Katie what…what are you doing?” “You got to see my tits, I want to see your cock.” I pulled my brother’s shorts off and boy did I get a surprise! I never knew my brother had such a big cock! I let out a gasp when I saw it, then I immediately grabbed it. I just had to hold it my hand. “Oh my god Mark! Fuck, your cock is huge!” My brother gave me a little wicked smile. I held it in my hand, it felt so hard, hot and heavy. I just stared in amazement at my brothers’ cock like he stared at my tits. Mark’s cock went completely hard in my hand, growing another inch and becoming even thicker. “How big is your cock Mark?” “Who’s the pervert now Katie?” “I told you how big my tits are.” “It’s about 9’ or so.” He smiled proudly at me. I began to stroke my brother’s huge cock; pre-cum was coming out of his piss slit like I had never seen. “Wow! I bet your girlfriend loves sucking your cock!” I kept looking into my brothers’ eyes; I could see the incestuous lust building in them, like it was in mine. “Yeah right Katie. Laura does not like giving blowjob's. Once in awhile, only if she is drunk enough will she suck my cock. Even then she won’t do it for long and never lets me cum in her mouth.” “Oh you poor baby. Having such a big cock and nobody to suck it. Maybe your sister can help you out.”

I bent my head down and slowly ran my tongue up my brother’s huge prick. I started at his balls and very slowly ran my tongue up the underside of his pre-cum covered cock. He tasted so good and I moaned my pleasure as I licked up his pre-cum. When I got his prick head, I flicked my tongue just under his piss slit, lapping up his pre-cum as it oozed out of it. My brother grabbed his cock at the base and lightly smacked it on my face. First he smacked it against my cheek, then my chin, my lips and then my tongue when I stuck it out. He smiled incestuously at me I smiled back. “I thought you were going to call mom and tell her I felt you up.” “I changed my mind Mark. I hope you don’t mind.” I gave my brother’s cock head a good going over with my tongue. He moaned with such lust and told me to keep doing it. “Oh yeah Katie, my girlfriend does not even do that! This is so wrong, so dirty, so incestuous.” I grabbed my brother’s cock, running his pre-cum covered prick head over my wet lips. “Mark, I won’t tell if you don’t” Before my brother could answer I opened my mouth wide and slid his cock into it.

My brother let out a loud moan of lustful, incestuous pleasure as he watched his cock being devoured by his sister. I took as much of his cock as I could into my mouth, running my tongue all over it. I slowly slid it out, sucking hard and long on every inch of my brother’s prick. Then I slowly bobbed my head up and down on it slowly at first, speeding up just a bit. My brother moaned, “Oh yeah Katie! Oh shit you are the best cocksucker ever! Who would have thought my very sister is such a great cock sucker!” I slid my brother’s prick out of my mouth; slowly my I wrapped my lips around his huge, throbbing prick head. I pulled my head away, pre-cum dripping off of my lips, “Who would have thought my brother would have such a big cock!” I began to bob my head up and down Mark’s prick, the part I could not take into my mouth I stroked as fast I could. As I sucked my brother’s cock, I noticed how much my mouth was salivating. I was really enjoying giving my brother a blowjob. I think in part because it was so dirty, so wrong, incestuous, his long, thick prick and the fact his girlfriend won’t suck his cock; all of that brought out even more incestuous lust in me.

I kept on giving my brother a great blowjob. My brother kept watching me, enjoying the site of his blonde haired, big tit sister sucking on his prick. "Oh shit Katie, keep sucking! Wow, I never thought I would be getting my cock sucked by my sister!" I ran my lips up and down my brother's cock, and then I began to stroke his prick as I talked to him. "Mark, you haven't asked me if I will let you cum in my mouth." My brother grinned lustfully at me. "Well sis, can I blow my load in your pretty little mouth?" "Is that what you want to do Mark? You wanna see your sister swallow your cum? You wanna see me with your cum all over my face and my mouth?" "Fuck yeah Katie! I wanna see my sister with her brother's hot cum load on her tongue and lips!" I sucked on my brothers’ cock for another minute or two before I answered him. I stuck my tongue out, running his huge cock head all over it, coating my tongue with my brother's pre cum. "I love the taste of hot, sticky, thick cum! Just tell me when you are ready to cum. I be a good sister and drop to my knees so you can jack-off into my mouth." "Stop talking and keep sucking Katie. I wanna cum in your sweet, wet, incestuous mouth!"