Note: This story was dynamically reformatted for online reading convenience. Part 4 It was about five minutes later that Troy came back and told me the Stimpsons were on the way and he was going back to get help them. I asked if I was needed and he nodded, We walked tot he parking lot and a man that i guessed was in his mid fifties was leaning next to his car holding a box. Troy walked up to him and he puled another box out of the trunk of his car. "Its food. We thought we should bring something along too" Mr. Stimpson smiled. "Where is you wife? " Troy asked. She'll be here in a moment. She had to call someone or buy something...I don't know" Both men laughed. "And you are?" Mr Stimpson looked at me. "A....I'm......" Troy broke in. "This is Zach.....you know...the son of the..." "Sorry!" we look over seeing a young woman jog toward us. "Jackie!" Troy smiled as he opened his arms for a hug. " I had to do something...." She looked at me "I'm Justin" I smiled holding the box of food. Troy talked to them as I walked ahead holding the box. I was wondering where Mrs. Stimpson was as I thought the girl that had to be in her late twenties was their daughter. As we got to the boat Troy took the boxes and I started walking back to the parking lot. "Where are you going? Troy asked. " I was going to go wait for Mrs. Stimpson." Troy laughed. "The Stimpsons are on board." He smiled. All of a sudden I felt very dumb. "Oh." Is all I could say as I walked back and started untied the boat. The next few minutes were busy as we go back out in the lake. I had moved up front on top of the bow to wind up the ropes and make sure we were clear of anything that might be floating around in the marina. "Come on back" Troy yelled to me. "We're almost clear of the wake zone" I climbed around the side and onto the back of the boat. Mr Stimpson was smiling at me and extended a hand to greet me. I shook his had blushing a little hoping he didn't notice. Mrs. Stimpson was sitting down and looking at the lake. "It's okay "He said as he shook my hand. "I get that a lot. She is young enough to be my granddaughter...almost" He laughed. "I didn't mean...." He broke in telling me it was okay and we talked a little as the boat pulled away from the marina. Her name was Pam and his was Mike, but I wasn't sure if I could call them by their first names or not. "Zach!" The conversation was stopped as Troy called me forward. "Want to drive a little?" I took the wheel and as Troy went back to talk to the Stimpsons. I could feel them looking at me as I drove. I just did the best I could remembering where we had come from. I was thinking about the Stimpsons. I was thinking they were nudists too and I was very eager to see Mrs. Stimpson naked, if it was going to happen. She was maybe 28 ore 29 and was strikingly pretty to me. She had so short shorts on and her tan legs were perfection. She also had an oversize shirt on. When she ran it moved...a lot. From what I could tell she had a big bust. As I thought about it my cock started to harden but went down as I thought of Mr. Stimpson. He was a nice looking man with think salt and pepper hair. Seemed to be in ok shape for an old guy and was shorter than Troy and my dad and not much taller than I was. I was trying to figure out why someone that young would be with a guy that old? I was fourteen after all so I wasn't sure how relationships worked. I was lost in thought as I drove when Troy came up to me. "You can get nude if you want. No will see you from where you are standing...at least from outside the boat." I quickly dropped my shorts feeling th confines of my shorts leave as I stood there nude again. Troy put his hand on my ass then reached around and softly felt my cock again. I could feel both of the Stimpsons look on as he did this. I had no idea what to think but enjoyed the feeling. I had just cum twice with the nine year old girls about a half hour ago and I was more hungry than horny, but it still felt nice. I look back seeing the Stimpsons. Both of them were topless. However seeing Jackie's boobs had me do a double take. She was thin but her boobs were large, larger than Erin's were and had been what I thought perfect big tits would look like before I saw any in real life. She was very tan almost dark, long brunette hair, her areolas were large but looked perfect for the size of her tits and her nipples were very long too. She hugged a towel over just below her tits as we sped along. Troy noticed my cock and pushed on my shoulder a little so they could see my cock. "Go say hi to them. I'll drive for a little." Once again my nude hard cock was on display for some people I just met. Both Jackie and Ethan smiled at me I got close to them. "Can I get you anything?" Is the only thing that came to my mind. Both just smiled at me and shook their heads. "How long have you been going nude?" Ethan asked me. "About two days." I tried not to yell even though the engine noise was loud. "You have a nice tan for that long." Ethan said. "How old are you?" "Fourteen." I told him taking glances at his wife's tits. He smiled at me and winked. "You like being nude?" He asked "I do." I told him smiling. "Looks like you like it." He smiled back. "I can see how happy you are." He looked right at my cock . "He Zach." Troy called me over to the wheel. "Think you cam get us back from here? I looked around and then at him and nodded. Troy went back to talking with Jackie and Ethan as I drove back to the bay where our house boat was. I kept turning and looking at Jackie's boobs. She was like a Playboy model. At least that is what she looked like to me. I was hoping I was going to see the rest of her too. The sun was slipping behind the cliffs as Troy took over and pulled the boat along side the house boat. Mom, dad and Erin were there to greet us. All of then nude holding some kinds of drink in their hands. "Can you help me anchor this thing Zach?" Troy asked,as I moved to the front of the boat and dropped a heavy metal object tied to a rope. I tied it off and jumped in the water and swam over to our boat. "Hungry?" Mom asked as I climbed aboard the back of the houseboat. She looked at my cock which was under the semi hard state at the moment and smiled at me. "There is some food for you in the galley." I grabbed a towel and dried off. It was still very, very warm out and I dried off as I watched mom's perfectly tan nude ass walk away and up the stairs to the upper deck. I opened the fridge and gathered some food and started eating. "Zach!" My naked sister came bounding down the stairs. As I saw her my cock got hard instantly. She had a smile from ear to ear. "It was so boring while you were gone. Ugh." She giggled. "Its like mom and dad are so boring when you are gone. Did you miss me?" I stood up while I took a bite of food and let her see my now hard cock. "I did. I had no idea that...well...you caused this." I nodded to my hard cock. As I did she hugged me then pulled my face to hers and kissed me hard. I swallowed a little then kissed her back. It wasn't a brotherly kiss nor was it a sexual kiss. It was just something I think we both needed right then. "Mind if i eat?" I said I we broke the kiss. "K" she smiled at me. "So what happened when I was away?" I asked her. "Well...mom and dad talked with Erin mostly. They did ask me to do somethings while they watched me." "Like what?" "Well...mostly they wanted to see me do things like stretch and dance a little and look at me. I kinda felt stupid." She giggled. "But then dad touched me...down there...and mom and Erin came over and kinda did what dad was doing too but not as much. Erin started laughing at dad and she started to play with his boner until it shot all over mom and me. After than I went swimming and exploring around the beach then just waited for you to get home." I put finished eating and put my hand my hand on her nipple and felt it as she smiled. "Do you like this? I mean being naked and letting others see you and stuff?" Sydney looked at me. "Yeah...I do. I never thought I was anything special until you and some others saw me naked. It makes me feel....good inside...kinda like I'm a someone." I felt her hand on my hard cock. "I had no idea you looked so good naked." I told her. "I mean you look really hot. And I'm not just sayin' that 'cause you are my sister." I blushed a little at that. She leaned over and kissed me again just a little one to say 'thanks' for being so kind to her. "So did you ever think that dad and mom were...?" I looked at Syd. She nodded. "I kinda saw dad...a lot." She giggled. When no one was home he would run naked on the treadmill and leave the door open a little. I looked forward to when you and mom were gone. One time I even..." She stopped. "What Syd...what ?" My voice low. She took a big breath. "I got naked and played...with my....um...." "Did dad see you?" I asked my cock now very hard and throbbing. "No....but I wanted him to see me. All of me." "When did that happen? " I asked her quietly. "It was..." She stopped and thought "You were ten? or nine?" I asked. "Ten." She paused. "But one night when I was nine dad came into my room naked to see if I was sleeping. I wasn't and I saw him. All of him." "Was he hard?" I asked. She nodded. "How long did he stay there?" "About five minutes. I pretended to be sleeping but was watching him. When he left...that when I started playing with my..." "Your pussy?" I smiled. She nodded again. "I would try and see dad....or you naked but never saw you except in undies." She giggled. "I like you better naked. "Do you want dad to....you know?" Sydney smiled and nodded. "Zach, Sydney. Come and meet Jackie and Ethan. Mom called down to us. We both went on deck and went over to the railing on top of the boat. Ethan was on the back of Troy's boat with Troy. Both men were nude and looked happy. I could see Mike and Troy both eying Sydney. I could see both of their cocks start to get erect and as Mikes grew I think I understood why Jackie liked him. It wasn't hard but it was getting there. I looked over at mom just as Jackie came out on the boat totally nude too. I wanted to hump the railing as I looked at her but thought better of it. "Hey Sydney! Troy yelled to us. "Want to see the inside of the boat?" Sydney looked at mom and dad, then looked at Troy. "Can Zach come too?" "Sure....he has seen it all...but...." "Come on Zach!" Sydney took my hand and pulled me down to the main deck and we both jumped in the water together. We swam over the back of Troy's boat and Ethan helped us up. Sydney went first then Ethan pulled me up. I was hot for Sydney my cock still erect. Ethan's cock was now semi hard and was as long as dad's was. I could see Sydney stare at it as it continued to grow as he studied her. My attention was pulled elsewhere. Jackie was standing next to Troy. She was my height, had dark hair and tan skin. Her boobs were amazing. While Sydney really didn't have any boobs, just bumps that were fun to feel, and mom had a tight b cup. Erin were somewhere between a C and D cup, but Jackie's were bigger, I am not sure but maybe a triple d.(she was a 34dddd) The thing was she was so thin, she had narrow hips and a thin, from the front, waist, but she was also pregnant. She had what looked like a little bowling ball under her belly. (I found out later she was 6 months along.) Her pussy was as bare as my sisters but her slit was much deeper and longer. Her arms and legs were perfect. I looked over and saw mom and dad watching us while they talked with Erin. Dad was semi hard and mom was feeling his cock gently. Mike was more stocky. He had some hair on his chest and was not fat but heavier than my dad. His cock was now fully grown and pointing straight out at Sydney. It had to be at least 9 inches long and it curved up. I could see Jackie smiling at what was going on as she walked froward. "I understand you two...do things." She smiled at me and Sydney. "I bet Ethan would love to see that. I would too." She smiled at me. I looked over at Syndey and she was smiling and blushing a little. I looked over at mom and dad and they were not paying attention to us. The thought of fucking my sister in front of other gave me shivers. The sun was setting now and it was getting darker. "Zach...Sydney...you can use the room under the bow." Troy was slowly jacking his cock as we went down into the hallway and into the room under the bow. The room was "V" shaped with a bed at the bead of the "V" and chairs that could fold up into the wall at the foot of the bed which looked to be about a queen sized bed. I looked at Sydney as she smiled. Jackie was playing with Ethan's enormous boner. I looked at Sydney and she looked at me and smiled. "So you want to do this?" She whispered to me as she fondled my cock. "More than anything." I whispered back. I slowly leaned into her and gave her a kiss. My hand went to her chest as i felt her soft swells and the hard nipples at the point of them. Ethan and Jackie were at the foot of the bed and Troy was off to the side. All three of them were no more than two feet away. There was no noise in the room at all. I could hear my heart beat in my ears as I French kissed my 11 year old sister.I felt her push me so that the others could see us better. She pulled my hand down between her open legs so that Mike could see me rub her pussy. I heard Jackie moan a little then could hear faint whispers as we kissed and felt each other for our audience to see. I felt unaware of the others as I got lost in my sisters sexual play. I stopped kissing her and moved down kissing her neck and ears then lower to her nipples. I could hear Sydney moan as I did so, then moved lower. I drug my tongue across her tight belly and down to her bald pussy. I licked the skin around as she opened her legs wider then I kissed her pussy. I rolled her back a little so Ethan and Jackie could see as I fingered Sydney and kissed the top of her opening. I massaged her pussy and kissed her until she started to squirm, and lock her legs around my head as she moaned and orgasmed while I licked her. I rolled her up a little more and licked her anus sending shivers across her body. I felt someone run their hand across my ass and feel my anus too but didn't care as I made my sister release her sexual tension. "Look how big his balls are." I heard Jackie whisper to Ethan as I opened my legs for them to get a better view from behind. Sydney moved and looked me in the eye as I moved forward and sunk my cock slowly into her opening. I could feel the other people move to get a better view as I moved my hard cock in and out of Syd. I had never felt this much love for my sister before. Sure, she was fun most of the time and we liked each other but this was something different. I felt we were now part of each other. I sped up fucking as my sister moaned then looked around. She tapped my shoulder and I pulled out. "I want to be on top, so they cam see better." She giggled I stood up as she moved. but she paused and sucked my cock in to her mouth tasting her own juices then kiss me again. She had me face away from our audience as she looked at them holding my cock. She then sank down slowly so they could see my cock enter her tight bald pussy. "Shiiiiiiiiiiiit" I heard Ethan whisper. "I am so fuckin' hot right now." Sydney and I kept up the show as she start to ride me. I felt her nipples and played with them as the three looking on gasping. I could hear the moist noises coming from Sydney's pussy as well as Jackie's. I turned my head to see her looking at me smiling as she masturbated Ethan and herself. I could feel Sydney squirm around on me again as she closed her eyes and her head fell back. I grabbed her hips and thrust up cumming into her as she orgasmed a second time. She let out a long moan and shook as we came together. She then rested, with her hands on my shoulders and looked at me. She smiled then fell on me and kissed me passionately, then just rested on me, my cock still inside her. "Oh my..." is all I heard Jackie say. "That was the most beautiful..." Sydney pushed herself up and so that everyone saw, raised off me so they could see my cock slip out. She then bent over and sucked it and came up kissing me. I could taste her juices and my cum as we kissed, letting the others see what we were doing. Sydney broke off the kiss and rolled over and started to giggle then sat up. "How was that?" She looked at Ethan and Jackie. I had never seen a cock the size of Ethan's. He looked dazed as Sydney moved over and felt it, running her hand up and down his shaft. "Zach is still hard." I heard Jackie say as I sat up then stood. She smiled and felt my cock as it tingled and was almost too much for me to take after coming so hard in my sister. She felt my balls and leaned into me and whispered. "I want to fuck you so hard." Just then Ethan moaned as Sydney made him cum. His cum flew in the air landing on Syd and me. "Shit girl. you are young enough to be my grand daughter and damn... I want to fuck that tight pussy." That just hit Syd funny and she started to laugh. That in turn got the rest of us laughing. We walked to the back of the boat and Sydney and I said our good byes. I watched as my sisters little ass went in the water then turned to Jackie. I put my hand on her breast and moved it around. She quickly grabbed my hand and pulled it to her nipple and told me to pull on it. I did as she asked then sucked it for her. She smiled and patted my ass. "I'd like to see your whole family do what you did tonight." Se then turned and moved away as I jumped in water and swam to our boat. When I got on board I wasn't hard anymore. Syd just smiled at me and gave me a hug. "Lets go see what mom dad are doing." We stared up the the stairs, me getting to see my sister's ass up close. When we got the the upper deck it was dark with the low lights of the deck on. Mom, dad and Erin were laughing. "How was the boat tour?" Dad asked. Sydney and I both looked at each other and laughed. "Its a nice boat dad." Sydney told him smiling, dad looking at her and smiling back. "Well..I think its time to turn in." Erin said as she gave mom and dad a hug. "See you in the morning." "Zach." Mom turned to me. "Will you make sure Erin gets back on Troy's boat okay?" I nodded and climbed down the stairs and waited for Erin to come down. She was all smiles as she looked at me. "I am so happy that I finally got to see you naked. I have been wanting to see you nude ever since I first saw you." She smiled at me and put her hand on my cock. I just smiled back as she leaned in and kissed me pulling me to her nude body. I could feel her move her body against my cock moving it around making it stiffen. Her finger ran up and down my ass crack as she kissed me hard. When she finally broke off I was hard again but not feeling that horny. She knelt down and sucked my cock in her mouth and hummed. She didn't suck it too long and had a big smile as she stood up again. "Come on." She took my hand and we went to the back of the boat and hopped into the warm water. We swam the short way over to the other boat. Erin took hold of the railing but stopped. I moved behind her waiting for her to move. As I did my hard cock bumped her ass and she moaned a little. She reached behind her ass and found my cock and pulled me toward her. I got the idea and as she held onto the railing I slide my cock inside her pussy. She giggled a little as i gave her a few humped but I was out of cum and tired. I held onto her as my cock stayed in her pussy as she wiggled her hips. "Okay" she said as she moved up the ladder as my cock slipped out. "I will be thinking of you tonight. She smiled as she walked away. I smiled as i swam back to the house boat and climbed on. I went to the upper deck and looked at the stars with mom dad and Sydney. We talked for a while looking up while a hand would move to feel something on someone. I started to doze off and told them I was going to bed. On my way to bed, I grabbed something to eat, brushed my teeth and went to bed. "Zach. Zach!" I woke up a little. It was dark. "Wha...?" "Shhhhhhhhhh, I don't want to wake Sydney." It was mom. "Is something wrong?" I was no awake even though it was 2 in the morning. "Follow me." I felt mom touch my cock, which was now fully erect and I felt I needed to pee. I followed mom up to the main deck where my parents room was. It was a little chilly and my cock was doing it's own thing. Mom opened the door and dad smiled at me. "You doing okay Zach?" dad asked me. I nodded as I looked at his deep tan and hard cock. "Mom and I just wanted to talk to you about things" "And it couldn't wait until morning?" I asked. Both mom and dad laughed. "We wanted to ask you a few things. Mom told me. "And show you some things too." Dad followed. "Okay. What?" My cock was now semi hard and I didn't mind at all I was naked with my parents. "First is that we want you to know how proud we are that you and your sister joined us going nude. How do you like it so far?" Mom said to me. "I like it. I mean at first I was freaking out a little but I like how it feels to be naked all the time." "Anything else?" Dad asked. "Well, I like seeing others naked too ...and I liked it when Sydney got naked for the guys to see her. " "Do you mind being seen nude?" Dad asked. "I kinda like it." I blushed a little. "How much?" Mom asked as she smiled. "Umm." I looked at mom. "We want to show you something." Dad said as he opened a box. "We want you to see something." "Okay." I said as i walked over to their bed. Dad pulled out a little book and opened it. "We wanted you to see these." Dad told me as he gave me the book. As I look it was photos of nude people. Some were old and some very young. As I looked at the photos my cock got hard again. As I went through the book there were people, all nude and having fun. There were many shots of women and girls with their legs open. Most of the women were natural or had trimmed pussy hair and then there were young girls that didn't have any at all, which I liked. As I got toward the end of the book there were photos of nude men with hard ons and girls around 7 years on up playing with them. There were also photos of kids and older people having sex. There was even a few of young boys with older women and girls about their ages. By this time my cock was so hard. Mom and dad smiled at me. Dad now very erect too, got up and opened a drawer and pulled out a video camera. Mom pulled me over and kissed me and she put her hand on my cock. "We want to make a video of you having sex with y our mother." Dad smiled at me as he got the camera ready. Just do what comes naturally. Before I could do anything mom pushed me down on the bed and started kissing me. She moved off my mouth and went down my body as she kissed me running her tongue along my torso. She then sucked in my cock as dad recorded the whole thing. She was talking in a soft voice about me and how long she had wanted to have sex with her son. Everything just spiraled out of control as mom and I got into it. I was kissing my mom and playing with her tis, sucking her nipples and licking her pussy and ass. Dad was there move in getting close up shots as I lick mom to orgasm after orgasm. Dad got close as I sank my cock into my mom s pussy. Entering where I had come from so many years ago. It was wild. Both mom and I were covered in sweat. I could see dad jacking his cock with one hand and film with the other. I could feel mom's pussy warm around my cock. Her pussy wasn't as tight as Sydney's and I was hoping they would get us fucking too. I had no idea my mom could be so nasty. She was doing things to me I had never even dreamed of and I loved it all. Mom was on me when I started to cum. After the first spurt she moved off my cock and grabbed my cock shooting cum on her mouth and my stomach. She licked it all up, smiling as she did so. Mom looked at me as I sat next to her playing with her hard nipple. She opened her legs as dad caught some of my cum oozing out of her pussy. Dad looked at her and put the camera down. I watched as he eased his hard cock in to her wet wet pussy. Mom took my cock and payed with is as dad fucked her. I couldn't help but get turned on at seeing this. Usually I think this would have made me feel sick if I had seen this a week ago, but I had changed. I loved seeing this. "Zach. Zach!" Mom brought me out of my trance. "I was you in my ass." She smiled. Dad pulled out. his cock hard and wet with mom's pussy juice. Dad moved then got on the bed as mom lowered her pussy on his cock again. "Fuck my ass Zach." She said looking over her shoulder as she leaned forward. "OK" I was in a daze as I got between mom's and dad's legs and pushed my cock into my mom's tan ass. There was only a little resistance as I pushed my head in. Mom and dad held still as I sunk my cock in her. Mom let out a long moan as she stared to move fucking b0oth dad and I as the same time. Her ass was tight. tight likes Sydney's pussy was. I got in to it fucking my mom's ass. I could feel my balls swing and at times felt them hit dad's balls. It didn't take long before mom let out a moan, her body shaking as she came hard. It went on and on as dad and I kept going. I grunted and started shooting in moms ass as dad let loose, raining his hips along with mom and me above him. We all just laid there for a few minutes and mom started to laugh. "That was the best fuck...." She moaned. I pulled out of her ass and watched as her ass winked open and close, She got off dad and rolled over as dad kissed her, feeling her body. "I'm tired." I said softly. Both mom and dad smiled at me and nodded. "Sleep well son." Dad said as I left. I went back down to my room but before I did I went to Sydney's room and looked at her. I lifted the sheet and looked at here nude perfect body. I smile at her put the sheet back on and went to my bed and feel asleep.