Note: This story was dynamically reformatted for online reading convenience. Snooping sister 2 Dinner in Petersons house was a quiet gathering. Cathy thought about what happened, Pat thought about her daughters and Nilla thought about keeping the pressure up on Cathy. After dinner they all sat down in livingroom to watch some tv, Pat in her recliner chair and the daughters in the sofa. This time Nilla sat really close to Cathy and constantly made sure she touched Cathy. Sometime on her nipples, sometime on her pussy but mostly the legs and arms. Cathy felt uncomfortable with all the touching and glanced to see if her mother noticed but Pats eyes pretty soon slumped down as she dosed off. -Slut, I am going to come into your room tonight and then I want a good pussylicking. Nilla whispered in Cathys ear. Once again Cathy glanced at her mother but she snoozed peacefully in her chair. Nilla saw her mother sleep in the chair and made a decision. Standing up she pulled her younger sister up on her feet. -Come. They left their sleeping mother and went upstairs. Nilla pulled Cathy inside her room and said. -Take of my shorts and panties. Cathy pulled them down and followed herself until she was on her knees. Nilla sat down on the bed and then laid down spreading her legs wide. -Why dont you worship my beautiful cunt again. Nilla knew her mother would sleep a couple of hours and not wake up before 8 so she had time to push her sister more. Cathy put her head close to Nillas pussy and sniffed a little. She could smell her sisters excitement and it immidiately transfered to her own pussy. Cathy dove in. She began to lick as if she was possessed and took Nilla by surprise but the older sister quickly decided to let her baby sister feast as long as she wanted. -Oh god, you horny slut. -You are getting better by the minute. -We are going to be best friends now and you are such a obedient carpet muncher that I will have to push you from my pussy. Cathy licked with entusiasm and made Nilla start to get close to orgasm. In an attempt to slow it down she put her hand on Cathys head and pushed downwards while saying. -Why dont your tongue do business a little bit lower. Pushing Cathys head down until she was in level with Nillas rosebud gave Cathy an idea of what Nilla wanted. Without hesitation Cathy pushed her tongue inside Nillas ass as if she was an seasons veteran and not an beginner. -God you are eager. -An real buttslut, that is what you are. Downstairs Pat woke up from some strange reason. Usually she slept a couple of hours but this time she only slept an half hour. She looked around the livingroom realising that her daughters had left which also was strange. They usually sat in the sofa until she had to tell them to go upstairs. Pat yawned and stretched her 48 year old body. She had a full set of breast that sagged a little but not much and wide hips with a great ass. Her hair was blond as her daughters and at 1.72 she still had an height advantage on her oldest daughter. Pat was fit but carried a little extra kilos who mostly sat in her hiparea. Pat got out of her chair trying to figure out what her daughters did. Since that disastrous party two years ago Pat and Nilla had a strained relationsship and Pat did not hold the upper hand in that. She had made an fatal error at that party but her actions after that party made even an bigger damage than the misstake itself. By ignoring the fact that she and her sister had made an sexual act not only with her daughter but also with Ginas daughter Winnie. Her tries to just forget it made Nilla resentful to her and they have been arguing ever since. Pat slowly walked up the stairs and heard a voice coming from her older daughters room. It was true that she often sneaked up ont Nillas door and listened when she masturbated and she could not help herslef from fingering her own pussy during the time she listened. So without even thinking about it Pat silently moved towards Nillas door and secretly listened. She could hear her daughter grunt inside and marveled over how much she masturbated but seconds after her blood run cold when she heard Nilla say. -Ooh your such a good pussylicker, slut. -At last we have a place for you to put your nosy face. Pat panicked and moved to her younger daughter room and opened the door. The room was empty so she quickly got back to Nillas door and listened. -You know what slut, this is your calling. -To be serving your sister and worshipping her cunt. Pat knees crumbled and she put her hand over her mouth not to scream. -Oohh shit, this is almost going to be as good as when mum stood listening outside earlier. Pat understood that when she had fingered herself outside Nillas room Cathy had been the one licking Nilla. Sick of the realisation but also feeling a twinge in her pussy Pat realised that her older daughter used her younger daughter as a sexual relief. Pat decided to open the door silently just a little and try to see what was going on. Slowly and quiet she pushed the doorhandle down and lightly opened the door just as much needed to be able to watch. Pat immidiately recognised the back of her younger daughter on her knees and with her head between her older daughter legs. Nilla on the other hand was on her back in her bed and her legs wide spread with her hands guiding Cathys head. -Uhh, your such a nasty bitch. -Licking your sister butthole and pushing your tongue inside. -But now you better move upstairs and get me off. Pat marveled over how beautiful her older daughter where and the hole scene was getting to her more than she ever thought. Pat panties where wet from her pussyjuice and every thought of stopping this had gone away. She watched as Cathy licked Nilla to an loud orgasm all the time diddling her own pussy. Nilla laid still but continued to hold her sisters head to her pussy. Nilla closed her eyes and then opened them again. Something bothered her. She grunted an order to her sister. -Clean my wonderful and beautiful pussy. Cathy did as she was told and while her sister licked her pussy again Nilla tried to figure out what was wrong. It took over one minute before Nilla realised that the door was slight open and she was certain she closed it. Nilla caressed her sister hair and talked with her while she held an eye to the door. -Are you horny, slut? Cathy lifted her head and nodded. Nilla saw a movement in the doorway and realised that her mother was watching them. Jubilant inside she said to Cathy. -Strip bitch. Cathy got up and began pulling off her clothes but Nilla stopped her. -No, do it sexy. -Dance for me while you take off your clothes. Cathy stood in front of Nilla not knowing what to do. -Dance? -Yes, my stupid pussylicking nosy slut to sister. Cathy blushed but started to sway her hips while slowly pushing her t-shirt up. -Thats better. Nilla looked to be watching Cathy but instead she had an eager eye on the doorway. Nilla continued to ramp it up. -Tell me what you are. Cathy again did not fully understand what she was ment to do. Nilla kicked Cathys leg and barked. -Tell me slut what you like to do. Cathy studdered. -I lilike to ssuck your pussy. -Ah but bitch, not only my pussy. -You like to suck any pussy I tell you to, dont you. -Yyes. -So if I tell you to suck Winnies pussy you will do it? -Yes. If I tell you to suck your friend Amys pussy you will do it? -Yes. -Any pussy I tell you to suck you will do? -Yes. Ginas? -Yes. Cathy now had pulled her t-shirt of and danced with her upper body naked. It was almost like Cathy had entered another state of mind because her hands slided over her body and when they came to her nipples they caressed them both. Cathy answered automaticly to Nillas questions and never reacted to what Nilla said. She just said yes to all. -Are going to lick my friend Marys pussy. -Yes. -Maybe even suck your mums pussy? -Yes. Pat gasped in the doorway as she heard Cathy say she would suck her pussy but her eyes where glued to her daughters dancing body and her panties layed on the floor. -Sooner or later that is going to happen so get comfortable with the thought of sucking mums juicy pussy. -Yes. -Now drop your shorts. Cathy wiggled her shorts down her legs and when they fell to the floor she kicked them to Nilla who caught them and sniffed the crotch. -Uhm, I smell whore, dirty whore. -Is that you sister? -Yes. Nilla wanted her mother to see all of Cathy body so she ordered. -Spin around a couple of times while you please yourself. Cathy turned around and pinched her nipples and diddled her pussy and Nilla could swear she heard a moan from the door. -Dance sexy, slutsister. Cathy danced and danced and got more and more excited. Her thin body with its rockhard nipples made both sister and mother study the preeteens body closely. Cathy was slim but not skinny and she had a tight butt with long legs attached to it. Even if her body was not in bloom yet it had an deeply arousing effect on her audience. The thought of her mother watching plus Cathys arousing dance made Nilla horny and she decided to give her mum a great show. -Whore, now it is time to fuck you. Nilla stepped up from the bed and pulled of her t-shirt and bra. All naked except from her socks she told Cathy to lay down on the bed. She had to adjust Cathys position two times before she thought it was right. -Slut, spread your legs. Cathy quickly spread her legs wide and Nilla stepped in between them and mashed her pussy at her sisters. -We are going to do some tribbing. -Whores like you love that. After saying that Nilla began grinding her pussy against Cathys. Immideately Cathy moaned and Nilla turned Cathys head to the left so her mother could see it. Pat saw Cathys left side of the body but got an frontal sighting of Nilla. Pat admired how taut and fit her daughter looked and she loved the youthful freshness of both her daughters. Pat picked up her panties from the floor and stuffed them into her mouth while she watched Nilla grind her pussy at Cathys. Nilla gripped Cathys left leg so she could manipulate how much pressure Cathy got on her pussy. Cathy moaned out loud but put her hand over her mouth directly after that. -Dont worry about that, you know mum sleep like a log. Cathy took her hand from her mouth and groaned again. Nilla pushed harder against Cathys pussy and Cathy respons was instant. -Ouuhm, shit. Now Nilla rode her sister like she was a bucking horse and Cathy bucked, moaned, jerked and most of all climaxed several times. Nilla was breaking out in sweat but she was not near an orgasm herself so she continued riding Cathy hard. Outside the door Pat had climaxed twice grunting into the panties she stuffed in her mouth. But she closely watched her daughters and she could tell that Cathy had cum a couple of times. Nilla kept up her grinding but as her climax arrived Nilla moved up Cathys body and planted her pussy on her sisters face. -Oh you fucking whore. -I am going to use your face as an masturbation tool. With that Nilla rubbed her pussy all over Cathy face until she climaxed. -Oooh shiiit, fuucckk. Nilla stayed on her sisters face all the time she climaxed and she drenched it with pussyjuice. It took two minutes before Nilla calmed down and when she finally was satisfied she got out of bed and said. -Get dressed, whore and get out. Cathy dressed and looked unhappy at Nilla. -Why you stare at me, bitch? Cathys eyes got moist as she replied. -Why do you have to be so bad to me all the time? -Because you are a slut and a whore and I treat those that way. -If you dont like it you dont have to come back. -Before you go kiss the pussy goodbye. Nilla sat down on her bed and spread her legs wide. With tears in her eyes Cathy bent by the waist and kissed Nillas pussy. Nilla grabbed Cathys hair and held her hard against her pussy. -Your such a fucking wuzz but your tongue is great. Then Nilla let go and outside Pat rushed downstairs to her chair and sat down in it. Cathy left Nillas room and walked to own room but then went downstairs. Her mum looked like she was sleeping in the chair so Cathy walked back upstairs. The next two weeks all three avoided each other. Nilla did it deliberately, wanting Cathy to take the first step into continuing her pussylicking service. Nilla was horny as hell but she forced herself not to do anything and even if it was frustrating Nilla could see the longing glances Cathy gave her. Pat stopped sleeping in her chair, afraid to miss anything but as the weeks moved on she thought that maybe it was only a one time happening. Cathy on the other side masturbated every night and she left her door open and slighly ajar hoping to lure her sister inside but that never happened. It felt good to masturbate but it was not even close as good as those climaxes with Nilla had felt. Masturbation or not, Cathy could not satisfy her needs by her self and after the first week she began to cast glances at her sister to make her understand that she wanted to be used as a whore. It did not help, Nilla never reacted on her tiny advances. When week two ended Cathy was desperate and decided to talk with her sister. That sunday her mum left to do some shopping and usually Cathy would have followed but this time she refused. Pat suspected that her daughters would do something but she had to do some shopping so she left anyway. Cathy heard the car leave and went to her sisters room and knocked on the door. At first she got no answer so she knocked harder. This time she heard an angry. -Go away. Taking a big breath Cathy stepped into her sisters room. Nilla opened one eye to see who it was and just grunted. -Out whore. -Please Nilla, why dont you play with me like you did two weeks ago. Pleaded Cathy to her older sister. Suddenly awake and extremely horny Nilla played it cool. -Because you whine like a baby so piss off slut. Cathy almost lost her nerve but managed to say. -But if I dont whine anymore? Nillas pussy gushed as she lifted the cover. She had her sister on her terms and now she would enjoy her winning. -Strip naked and crawl inside and start licking, whore. Cathy tore her clothes off afraid that her sister would change her mind and naked she jumped inside the bed. -Crawl down between my legs and do your thing, slut. When Cathy was in place with her head at Nillas pussy Nilla closed the bedspread around Cathy. All dark Cathy had to feel her way around Nillas pussy and tentively she licked in the beginning. But it was hot under the cover and Nillas scent was stronger so Cathy got lost in her lust and soon worked her tongue in and out like a machine. Nilla put both her feets on Cathys back and grunted out loud. -Oh god dammit whore. -I have longed for your tongue so much. -The cuntlapper is back and she is working her tongue hard. It did not take long before Nilla exploded in an tremendous orgasm. -Oooh fuuckkk. Nilla spasmed and shivered as Cathy sucked her clit hard. In the dark Cathys hands explored Nilla body and she pushed two fingers inside Nillas pussy. Her other hand grace Nillas ass and traced in between the cheeks. Cathy massaged Nillas rosebud drawing more grunts from her older sister. Nilla slowly pushed so that Cathy rolled on her back and Nilla spread her legs wide before pushing down on her sisters face. Cathy was sweating profusely and all her face was slick with pussyjuice but she loved every minute. Cathy licked and probed Nillas holes with her fingers and tongued for another hour bringing her sister to another two orgasms. Finally Nilla had to say enough to her sister and pull her up. Nillas pussy ached from all the licking it got. Nilla grunted a pleased. -Lets sleep a little. Cathy layed in same level as Nillas tits so she worked each nipple with her tongue as Nilla slipped into sleep. The cover was open a little so Cathy could see her sisters face as she slept and she could see her sisters beautiful tits. Cathy could not help it. She got more and more horny and her tongue traced each nipple and then she sucked hard on them. Nilla moaned in her sleep so Cathy made a bold move and pushed Nilla on her back. Cathy now had acees to the tits and her stomach could put pressure on Nillas pussy while she could grind her own pussy on Nillas leg. Cathy worked her mouth from nipple to nipple and slide her belly and pussy on Nillas body. Cathys movements became frantic as her pussy grinded at Nillas upper left leg.S Cathy mouth got harsher and harsher on Nilla nipples and her hands pulled her own body hard against Nillas. Suddenly Nillas eyes opened and she said. -There is no sleeping with a whore like you in bed. Nilla rolled Cathy on her back and got out of bed. A dissapointed groan was heard from Cathy but one hard look from Nilla silenced her. -I going to the toilet but I will soon be back. Nilla went to the bathroom and peed. She sat there grinning, knowing that she had her sister in the palm of her hand. -I am so going to enjoy fucking my slut sister knowing that she begs for it. Nilla wiped her pussy and looked in the mirror. -So this is how you look when you got your sister to be your sexslave. Nilla grinned at the mirror and then washed her hands and left. During the walk back to her room she looked outside and saw her mother drive up to their house. Nilla grinned wickedly and thought. -Perfect, mum will get the chance to see me fuck my sisters ass. When she got back to her room making sure not to close the door properly she asked Cathy. -Where is mum? -Shopping. -To bad because I dont think we have the time for anything more otherwise I would have fucked you. After speaking that Nilla yamned and stretched her limbs like a cat. But Cathy eagerly replied. -Oh no problem, you know mum loves shopping. Nilla thought. -Well not today. But said. -Slut, you really is horny, are you not? -Yes. -Ok whore, I am going to tie you up and fuck your ass and no matter if mum comes home I will go on until you cant take anymore. Cathy looked worried but Nilla quickly got her acceptence by saying. -But you can leave now if you want? -No I wanna stay. Nilla pulled out several ropes and leather bracelets of different size from the wardrobe. Nilla tied Cathy in a position similar to what a frog have with the difference that Cathy could not move away. Then Nilla picked out the belt and put it on in front of Cathy and after securing it tight she fastned the penislike object that Cathy had seen in the box two weeks ago. Outside Pat had sneaked in to the house quiet and now slowly walked to her daughters door. It was slightly ajar and Pat saw Cathy tied to the bed and Nilla standing in front of her with a strap on around her waist. Nilla had kept her eyes on the door and saw when her mother arrived. -Slut, I am going to pound your ass really hard. -This is your time to get out if you want. With clear but slightly trembeling voice Cathy said no. Pat opened her trousers and put her hand inside it. Nilla put one foot on the bed and pushed the dildo into Cathys mouth. -Suck it. Cathy sucked it. -Can you feel the taste of Winnies ass on it. -I plowed that succulent ass maybe two months ago and she loved it. -Let us se if you do the same. Pat frigged her cunt and looked on with anticipation. Any thoughts of stopping was gone for two weeks ago. Nilla pulled the dildo out of Cathys mouth and positioned her behind her sister. She squirted some lubricant on Cathy ass and aimed the dildo at the hole. Nilla put some pressure on it but not much as she could see Cathy was tensed. They stayed that way for more than a minute before Cathy ass opened up. Only part of the tip started to get inside when Cathy tensed again. -Relax whore, I am not going to hurt you. -In fact I bet you will love it. Again it was a standstill between the dildo and Cathys ass but two minutes later her ass relaxed and this time almost two centimeters went inside. -Ahhh. Nilla added just a little more pressure and another centimeter slipped into the ass. Over the time of ten minutes Nilla slowly worked the whole lenght of the dildo inside Cathys ass. When Nillas hip met Cathy butt she patted Cathy and said. -Now the worst is done, rest is pure pleasure. Nilla withdrew the dildo until it almost slipped out and then pushed it back into her sisters ass. -Ooh god. -Holy shit. Nilla grinned and glanced at the door before speaking. -Do you want me to stop? As she said that she made a quick pull out and then a hard push in and Cathy tried to respond during that. -Ouh nooii waaayy. Nilla grabbed Cathys hair and screamed. -Yiihaa, it is time to ride in this bronco. Now Nilla let go of all caution because her sisters respons to the assfucking was greater than she had hoped for. Pulling Cathys head back so that her mother could see the extasy in her daughters face Nilla began pounding her little sisters ass hard. -Arrggh jeeesus. -Fuuucckkk. Nilla never let up as she pounded on and her sisters got more and more vocal. Outside Pat looked on with big eyes as the pure lust was obvious on Cathy face. When Pat orgasmed she put her hand over her mouth and tried to muffle her screams but inside the bedroom the noice was so high that nobody would have noticed. When Cathy came she screamed without any restrictions. -Aaauuurrrgghhh. Nilla let her sisters climax calm down before she began fucking that ass again. There where no holds barred as Nilla roughly fucked her little sisters ass and she soon had Cathy screaming in another orgasm. -Whore, how about one more. -Yes fuck me fuck me fuck me. -As you wish. Nilla put some more lubricant on her sisters ass and pounded away. Nilla slapped the butt hard as she fucked her sister and when Cathy this time climaxed her eyes turned inside out. Her whole body shook and her manic spasms pulled at her ties and one loosened giving her right arm some leverage to wave. Nilla pulled out of Cathys ass and waited until she calmed down. -Good hey? Cathy could only nod her head. -Whore, clean the dildo. Nilla stepped up with one leg on the bed and made Cathy lick her own assjuice from the dildo. Nilla then took of her belt and sliped her pelvis under Cathys head and said. -Lick my pussy as thank you. Pat watched as Cathy began licking her sister pussy and then left to go downstairs. When Cathy had licked Nilla to another big orgasm then she was untied and Nilla said. -Get out whore. Cathy did not care this time about her sisters words and simply put her clothes on and turned to leave. -Wait, kiss the pussy goodbye. Cathy grinned and bent down and gave Nillas pussy a big kiss then turned and left. When Cathy came down she was startled to see her mother home. -Uh hi mum, when did you come home? -Oh hi sweety, just now. -You did not shop so long this time? -No it is no fun to shop alone. -It will be brunch in twenty so you have time to clean yourself up before.