Note: This story was dynamically reformatted for online reading convenience. Snooping sister 5 From that night it was downhill and fast. Nilla kept on pushing Cathy to do sexual services to her while her mother was close or inside the room. Cathy never objected so Nilla could pretty much do as she wished. She had Cathy to lick her pussy in the livingroom while her mother looked at tv. She had her sister to lick her pussy on the way to school in the backseat while their mum drove them. But most of all they began to touch Pat when ever they felt for it. Cathy was first reluctant to do it but she saw Nilla do it many times and always encourage her to do it to. Finally she did it but first her mother crossed the line before she did it. One day after school Nilla tied her naked to the bed on her back with her knees up at her shoulders. Then she bilndfolded her and said. -Wait here, I am just going to fetch mummy whore. When Nilla came back with her mother she pulled a chair close to the bed and sat Pat down. -Slut pet, mummy whore is going to watch as I fuck your cunt for the first time but first we have to get you excited. Nilla caressed Cathys face and slided down to her tits and pinched her nipples. -Ohh. Nilla than reached for Cathy pussy and diddled with her clit a little. During this Pat sat like a stone but when Nillas hands began caressing Cathy pussy Pat moved in her chair. -Does mummy whore wanna play too? Nilla pulled Pat up to standing and took the right hand of Pat and put it on Cathys left tit. Nilla placed herself behind Pat and guided Pat hand to cirkle Cathy left nipple. -Uuhh. Nilla then took her mums left hand and guided it to Cathys cunt where she let it rub up and down for a while. -Ooohh. Nilla guided her mum hands for a couple of minutes before she slowly took her hands away. To her enjoyment her mother continued to caress her youngest daughter so Nilla picked up her strap on and fastened it to her hips. She kept an eye on her mother and her hands and at one time when she looked like she would stop Nilla was back to force her hands to move again. Cathy could sense that there where two persons in the room but she was not certain that it was her mother who was the second one. But just the thought that she where caressed by her own mother made Cathy cream big time. Pats hands moved by themself now and her right hand was on Cathys right nipple this time and ligthly pinch it. -Ooh god. -Is mummy whore doing good? -Yeess, veerry goodd. Nilla sat Pat down before she placed herself at her sisters hip and guided the dildo at the vagina. Nilla looked at Pat and said. -Mummy whore is allowed to masturbate. Immidiately Pats hand pushed inside her panties under her dress and leaned back while beginning to rub. Nilla pumped the dildo along Cathys slit and pooked her clit every time. Then she slowly slide the dildo inside Cathys pussy and closely watched her sisters facial expression. She could see when she reached the hymen as Cathys face showed a little discomfort. Nilla did not press any further instead she withdraw and pushed back against the hymen. She did that multipel times and Nilla looked at her masturbating mother. -Slut pet is going to loose her virginity while mummy whore rubs her clit beside. Cathy moaned. -Ouuhhmm. Nilla pumped the dildo in and out while watching both her mothers rubbing and her sisters expression. When Cathy showed that she was close to cum Nilla plunged the dildo to bottom. At first Cathy groaned approval that suddenly got to a pain groan. -Ouuhh aaaiiiee. Nilla held still while she waited for her sisters face to relax and when it did she quickly pulled back and slammed fully down again. This time there where no pain groan just pleasure and now Nilla fucked her sister hard. Pat sat mesmerized and rubbed her clit while the other hand squeezed her breast. Nilla layed down on her sister and kissed her and as if by accident she pushed the blindfold up a little so now Cathy could see. This was of course no accident and Cathy turned her head to watch her mother masturbate. Powerful strokes rocked Cathy in the bed as Nilla continued to fuck her. Pat was so in to watching that she did not realise that Cathy head was turned towards her and that it meant she saw her. Pat spread her legs wider and rubbed harder. It was an powerful scene. An athletic sixteen year old was driving an strap on dildo into her skinny preteen twelve year old sister with mighty strokes. The whole bed shook but Cathys tits where to small and firm to move. Suddenly Cathy stiffened and a guttural grunt left her mouth. -Oorrrggghhh. When Cathy stopped climaxing Nilla climbed of the bed and stood close to her mother. She then took a hold of her mothers neck and slowly pushed the head at the tip of the dildo. With a hoarse voice Nilla said. -Suck it mummy whore. Cathy watched as the bloddstained dildo disappeared into her mothers mouth and Nilla fucked it a couple of times. She then pulled out her mother mouth and turned back to Cathy. -The little slut pet slit will be tender for a day but we still have your other hole. With that she plunged the dildo into Cathys ass and started fucking her again. All the time Cathy watched her mother masturbate and she decided that she did not need to hold back any longer. When Nilla pressed the vibrator at her clit Cathy came in a screaming orgasm. -Aaauuhhmm I loovee iit. -I loovee yoouu Niillaaa. As Nilla stroke her sister face with affection as Pat groaned her orgasm. Nilla caressed Cathy face over and over and said. -I know slut pet. -I love slut pet too. Pat shook of her orgasm but managed to stumble out of the room. The next day Cathy participated in touching her mother and felt her up when ever Nilla did it. The weekend arrived when Cathy and Nilla should go to Gina but friday Gina called and cancelled it because both she and Winnie was sick with the flu and had fever. Nilla was deeply disappointed in that Cathy would not get a weekend of fucking but as it turned out she got more than enough. Friday night Pat had a dinner with some of her friends and Cathy and Nilla was left alone. Nilla succested that Cathy would phone Amy to try to get her over but as it turned out she had an guest over and could not come this night. Amy promised that she would come saturday instead. So both sat and watched tv and Nilla discussed a way to get Amy into this. Cathy would take Amy to Nilla bedroom and rumage around her things. They would find some pornstash and of course the vibrators and play with them. Nilla would catch them in the act and from that they would wing it. Cathy got wet from the idea that she and Amy would be playing together. Amy is a dark haired beauty that have bigger tits than Cathy but not much. She is slim and her hips had started to widen a little. Her big eyes gives her face both an innocent look but also with alot of sex appeal. Cathy know that Amy is not so innocent as she looks but her mother is an christian and in churchgroups so Amy have to tone down her naughty side. But when they have sleepovers at Cathys home her more adventures side comes to life. Nilla has had the hots for Amy over an year and to be able to fuck that jailbait would be amazing. Cathy turns to Nilla and says. -Slut pet is horny. But Nilla only grunts. -Not now. The clock is almost eleven when their mother comes home in a taxi and she is drunk. She stumbles in through the door and falls when she is going to take of her shoes so Nilla and Cathy walks over to help her. Pat when she is drunk is loud and blunt so she yells. -If it is not my darling daughters slut pet and naughty Nilla. Pat giggles as she lies on the floor. -Well are you not going to help your mum. Nilla and Cathy look at each other then walks over to their mum. Nilla takes of her mother shoes and while she does that she also pulls the pantyhose of one leg. Then she steps up to help her mother out of her jacket and she also unbuttons her blouse shile doing that. Nilla and Cathy then helps her mother to her recliner chair and now Nilla works fast. She pulls of Pats blouse and tie it to left hand, drags the blouse through the chairs base and tie the right foot. She then tie the pantyhose to the left leg it hangs on and pulls through the chairs base and ties it to Pats right hand. In a short time Pat is tied to the chair spread eagle. Nilla look at Cathy. -Slut pet, now you are going to have a chance lose your horniness. -Go get a scissor. Cathy run away and Nilla looked at Pat in the chair. -Tonight slut pet is going to work her magic tongue on that cleft of yours. Nilla pushed the chair into laying position and took the scissor Cathy came with. She did not have to cut the bra since it opened from the front but Nilla cut the panties off Pat and threw them away. -Hey, those are costly. Nilla grinned her mother straight in her face. -Dont worry, you will get sexual favours for more than double the amount they costs. -Slut pet, go to work but god help you if you let her cum before I say so. At first Cathy stood still but then she placed her upper body on the chairs footrest. She kissed the thighs of her mother and placed her head between the legs and started to lick. Pat with her legs over the armsrests has no way to stop her daughter from licking her pussy. Nilla plays with Pats nipples and tugs them upwards while telling Pat what is going to happen. -Mummy whore, slut pet is going to lick that juicy cunt over and over until your body wanna explode. -But you will not get release before you order your daughter to give you an orgasm by saying, slut pet give me release. -And I can tell you from the bottom of my heart that slut pet is an amazing pussylicker. Cathy mind reeled in the praise she got and decided that no matter what, her mother was going to say the words before cumming. So Cathy applied her best technique in licking and graced, lifted and prodded all parts of her mothers cunt. Soon her mother writhed in the chair but Cathy was relentless. -Ouuhh please. -Please what mummy whore? -Oohh god, help me. -Mummy whore, there is no god to help you only a wicked tongue that will drive you insane. Cathy kept up her assault but was very weary about Pat trying to trick her. One time she got extremely close to letting Pat have an orgasm so Cathy pulled out completly and waited until her mother calmed down. Pat chest heaved in heavy breathing and when the tongue came back a animalistic grunt came from Pat. -Oourruuff. Nilla watched everything closely and admired how well Cathy held Pat on the brink of climax but never let her cum. -I am proud over you, slut pet. -You perform outstanding. Again Cathy head swirl from the praise her sister give her and she find new ways to torment her poor mothers cunt. -Ohh ohh, please Nilla. -Dont please me, it is all slut pets doing. -Ooohhh god aiii sweet jeessuss, please Cathy. To Nilla surprise and pride Cathy lifted her head and said. -Just call me slut pet and I will make you cum like you never cum before. Pat shifted her position and tried every way to get an orgasm but Cathy skillful tongue never gave her that friction so she climaxed. Nilla knew her mother was so close and understood that soon she would crack. She put her hands on the knot that tied the arms and opened them slowly. Then she heard Pat angry voice. -Oh you fucking cunt. -You slut pet daughter, lick me fuck me. Nilla locked eyes with Cathy and said loud in Pats ear. Your arms are free, just grab that slut pet head and smash her face at your cunt. -Thats all you need to do, smash her face to your cunt. With a scream Pat tore her arms free and grabbed Cathys head. -Fucking slut peett. Pat orgasmed spasming and all the time she mashed her baby daughters head to her pussy. -Oouuwww fuucckkk. When Pat started to calm down she felt drained of all her strenght and Nilla could easy retie the hands again. Then she said to Cathy. -Work her up close to an orgasm again, I will just fetch something. Cathy began her pussylicking again and it did not take long before she had her mothers cunt pushing up at her face. -Oh you dirty slut pet. -Nilla sure has given you a good education in sucking pussy. -Yes I have. Nilla came back into the room carrying the strap on, egg and another vibrator. -Slut pet, is she close? Cathy nodded yes so Nilla put on her strap on told Cathy to back away. When Nilla got to the chair she realised that Pat where to far up on the chair so she told Cathy. -Untie her hands. Cathy untied Pats hands and Nilla pulled her mother out of the chair and on to the floor. Then she aimed the dildo at Pats vagina and pushed it all the way in. Now Nilla fucked her mother like an obsessed and Cathy watched as her mothers big breast bounce. Nilla looked at Cathy. -Strip. With a happy smile Cathy took of her clothes and sat down beside her mothers head. Pat was so close to orgasm that she could almost taste it but Nilla pulled out of Pats pussy. Nilla stood up and took off her harnesk and waved Cathy over. She put on Cathy but it was to big so it fell down again. -Give me your clothes. Cathy reached for her clothes and gave then to Nilla. Nilla stuffed them inside the strap on but it was not enough so she took the blouse from her mother foot and mashed that inside too. Now the strap on could be fastened tight and Nilla pointed to Pat. -Fuck her. Cathy slumped to her knees and aimed the dildo to her mothers cunt but this was the first time she done it so she failed. She tried two more times without sucess so Nilla helped her get it in. -Now let me see slut pet fuck mummy whore. In the beginning Cathy fumbled and lacked rythm but after a while she began to get the hang of it. Cathy mouth was open and her face showed deep concentration so Nilla could not help to joke. -I see slut pets mouth is open, you will have good use of it. -When I let mummy whore lick my cunt I also want slut pet lick my ass. Nilla straddled her mother face and said. -Mummy whore is going to eat daughters pussy while other daughter eat ass. Then Nilla put her cunt over Pats mouth and grabbed her asscheeks and spread them for Cathy. Being licked at both holes was a dream come through for Nilla and she grunted happy. -Ohh my pets, do good or I will punish you. Cathy tried to fuck her mother while licking Nillas ass but realised that she was not able to do both things good so she focused on licking Nillas ass and only now and then fucked her mum. That made her mum stay close to climax but not go over and frustrated she licked Nilla pussy faster. Nilla grinded her cunt on Pats face and let Cathy tongue grace her asshole. -Ouhh push it in. Cathy pushed her tongue inside Nillas ass and wiggled it around. Now her sister got really horny and fucked her mothers face harder. Cathy followed Nillas every movement and worked her tongue further into Nilla hole. That did it for Nilla. -Oh god dammit, slut pet. -I love your tongue. It took some time for Nilla to calm down but when she did she looked down on Pat and said. -You have a lot to learn, mummy whore. -You are way after slut pet in skill. Nilla got off Pats face and said to Cathy. -Up. Cathy jumped up on her feet and Nilla took off the strap on. Then Nilla said to Pat. -Up. When she did not move Nilla kicked her in the ribs. -I said up, mummy whore. Pat got up on her feets and Nilla pulled the zipper down on the skirt who fell to the floor and had Pat to put the strap on. Pat was all naked now except the pantyhose that was around her leg. -Lie down again. Pat layed down on the floor and with the dildo pointing straight up Nilla had Cathy to straddle the dildo. Cathy gasped as the dildo speared into her pussy. Nilla took the egg and a vibrator. -Open. Cathy opened her mouth immidiately but Pat did not do it so Nilla slapped her mother tits. -Open, mummy whore. Nilla plunged the dildo into Pats mouth and got it wet. -You have to be as obedient as slut pet. Then she said. -Spread your asscheek, slut pet. Cathy spread them and Nilla pushed the vibrator inside the half lenghts. After that she turned the egg on and pressed it against Cathy clit. -Start riding, slut pet. Cathy started to move up and down on the strap on while Nilla pushed the vibrator in and out of her ass. It did not take long before Cathy picked up her speed and everytime her body slammed down Pats clit got a good rubbing. Nilla began to pump the dildo hard and press even harder with the egg at Cathys clit. The double penetration made Cathy grunt loud and raise the speed without being told. -Now mommy whore. -Pull those small titties right out hard and we will get slut pet to climax. Pat took hold of Cathys nipples and pulled them out but not to Nillas satisfaction. -Harder you stupid cunt. -Slut pet loves pain as much as she loves pleasure. When Pat did not do to Nillas expectation second time she pulled Cathys nipples Nilla let go of the egg and just slapped her mother face really hard. Pat got dizzy from the hit but heard Nilla say. -Next time you do a half ass job I will knock you out. -Now I want to hear slut pet scream in pain. This time Pat squeezed her daughters nipples so they got flat and then pulled really hard out. Cathy screamed in pain but then said. -Oh fuck I going to cum. Nilla straddled Cathys ass from behind and used her lower belly to push the dildo hard inside Cathys ass. Then she gripped Cathys throat and started choking the girl as she said. -Thank mommy whore as you cum slut pet. Pat was torturing the girls nipples and Nilla began cutting off her oxygen. Cathy shook as her orgasm hit her and she tried to scream but Nillas hand effectively stopped that from happening. The lack of oxygen made Cathy see stars and the pain from her nipples transplanted down to her pussy and Cathys eyes rolled back as she climaxed. Nilla let go of Cathys throat and gripped the girls shoulders and then pushed her pelvis hard at Cathys ass driving the dildo further inside. Pat looked with big eyes as Cathy spasmed and writhed as the orgasm wrecked her body. Cathy almost lost conciousness but remembered to thank her mother. -Thank you mommy whore. Cathys voice was weak and low but both Nilla and Pat heard her. Pat kept up mauling Cathys nipples and Nilla push hard a couple more times at the dildo getting Cathy to moan as she continued to climax. Cathys frantic movement rubbed hard at Pats clit and just as Cathy began to calm down Pat orgasmed. Pat pulled really hard on Cathys nipples a last time as she shook under her daughters. Cathy was unabled to hold her body up so she layed down on her mother and Nilla layed down on Cathys back. Nilla looked Pat in the eyes as she orgasmed and said. -My whores, I am going to have so much fun with both of you. Pat grunted as her body shook of her climax.