My daughter Amber had invited her best friend to spend the weekend with us at my condo on Lake Travis near Austin Texas. I am a single Dad, 43 years old, and live alone. My divorce from Amber’s mom was a mutually agreed thing and we are still very close friends, we just could not live together. Amber lives with her Mom but visits me all the time and on many weekends Amber stays at my condo on the lake. Amber and her friend Sandy are both students at the University of Texas and when their morning classes were over they headed to the lake. Amber got to my condo about noon and Sandy drove up about 1:00pm. Our plan was to spend some time on the lake Friday and then again play on the lake until Saturday afternoon before Amber had to return back to Austin for a wedding. The girls enjoy water skiing and tubing so without much delay we were out in the boat and having a blast. My daughter Amber is a beautiful young lady with dark shoulder length hair and hazel eyes, she is tiny and looks to be about 16 but in reality is 20. Sandy is 20 also and she too has dark hair that goes down to the middle of her back. Her breasts are much larger than Ambers and she has a larger frame. Both girls were wearing bikinis that left little to the imagination. Sandy jumped in the water to ski first and I could not help but notice her hard nipples as she pulled her life vest off after she got back in the boat. She was wet and her nipples looked abnormally long beneath her wet bikini top. Amber was in next and after a good bit of skiing she crawled back into the boat. Amber is my daughter but I could not help but notice her small white bikini bottom pulled up into the crack of her pussy. It was the perfect “camel toe” with her pubic mound sticking out prominently and the fabric of her bottom slid deep inside her wet pussy. My cock was getting hard and I was doing my best to keep it concealed from the young girls. The girls got hungry by midday so we headed down the lake to a local hangout for burgers and drinks. We had burgers and a few drinks and went back out to the lake. The girls wanted to cruise down by Hippie Hollow, a local nude area of the lake. We rode over and sure enough there were probably 50 people nude and partially nude lying around on the rocks and in the water. We floated around checking out the people and one very endowed guy, totally nude, on a raft, floated out right near us. The girl’s got an eye full, I noticed both young girls nipples were hard and poking straight out after being there for just a short time. We headed back up the lake and the girls took turns riding the “tube” all the way back to our condo. Sandy was climbing up the ladder on the back of the boat after riding and I was in the back to reach out and give her a hand up and noticed her nipple had slipped out of her top of her bikini on one side, she still had on the life vest and apparently had no idea her nipple was out. Sandy's nipple looked an inch long! I did not say anything as she sat down across from me and watched Amber ride the tube. She was swivelled around in the chair almost facing me as she turned her head to watch my daughter. I had a great view of her exposed nipple, her nipple was long and hard and her areola was quite large and light colored. I stopped the boat waiting on Amber to get in and took another look at Sandy’s nipple. My gaze lasted a little to long and when I looked up Sandy was looking right at me then quickly glanced down to see what I was looking at. She quickly realized that she had been exposed to me and re-adjusted her top to cover herself, but when she looked back at me she just laughed and said, “Sorry”. I told her, “Don’t be, I was really enjoying the view”. My cock was hard as a rock and I saw Sandy gaze downward at it. I decided I had better get into the lake and cool off a little and hide my raging hard on so I stood quickly, but had to face both girls briefly before I could get out of my seat and over to the back of the boat and jumped in. I knew they had both seen my hard cock making a tent in my swimming shorts but it was to late now. I swam around until I had cooled down and my cock had gotten down to a semi flaccid state before I got back in the boat. When I glanced down I could not believe it, the material of my swimsuit seemed to have moulded itself around my cock and I could clearly see the outline of my cock and cockhead through the wet material. I quickly sat back down behind the steering wheel and acted as if nothing had happened but I had seen both girls eyes averted straight to my crotch as I got in the boat. My face was red but not from the sun we had been in all afternoon. We headed back to the condo to shower and change clothes. We all cleaned up and grilled some burgers on the balcony overlooking the lake and enjoyed the view of the setting sun. We mixed a few pitchers of margaritas and talked and enjoyed each others company, Amber and Sandy wanted to get into the hot tub but I declined and sat back to enjoy the evening as the girls jumped up to go change back into their bikinis. The hot tub was below my balcony on the main deck and I watched as the girls slid in the warm bubbling water. Amber called up to me asking me to bring each of them another margarita and when I did both girls begged me to join them. I finally agreed and headed back upstairs to change into my swimsuit. I got myself a drink and went down to join the girls. I slid into the hot water and leaned back to relax. Amber was to my right and Sandy was across from me. As I slid back to relax my foot inadvertently slid up between Sandy legs brushing the inside of her thigh. Sandy never flinched so I just left it there. We talked a little while and I felt Sandy hand rubbing against my leg, then she started to caress my foot as she looked over her drink right into my eyes. I froze, sitting still and wondering what she was up to. Sandy slid down as if relaxing herself into the water bringing my foot up against the material of her bikini bottom. The bottom of my foot was now resting against her pussy and she slowly moved it up and down on my foot. My daughter was two feet from me and her friend was masturbating against my foot under the bubbling hot water. I looked over at Sandy and she smiled warmly at me as I felt her move the material of the bottom of her bikini to the side and place my foot against her bare pussy. My cock was rock hard when suddenly Amber broke me out of my trance by saying, “We have been down here long enough lets go back up and go to bed”. Sandy sat back up and we all got out of the tub and headed upstairs I was careful to stay behind the girls to hide my hard cock. As we walked up the stairs Sandy reached behind her to grab my hard cock and gave it a gentle squeeze but never looked back and then acted as if nothing had happened. I tossed and turned all night thinking of Sandy. The next morning Amber and Sandy slept in awhile and when they got up I had breakfast waiting on them. Both girls came in wearing t-shirts and panties but it was easy to tell neither had on a bra. We all ate and the girls said they wanted to go ski and do some tubing before they had to leave. We changed clothes and off to the lake we went. We stayed out on the boat for several hours until it was time for Amber to head back for the wedding. I helped the girls each pack their cars and told them I wished they could have stayed longer. I kissed Amber good-bye and then gave Sandy a hug and told her she was welcome to come back anytime. As we hugged she whispered in my ear, “I’ll be back in 30 minutes”. I think my mouth was still hanging open as each girl got in her car and drove away. I walked back inside not sure I had really heard Sandy right and then wondering if she was just messing with me. I waited inside about 20 minutes then the anticipation of what might be got the best of me and I walked back outside to wait. It wasn’t long before I saw her car approaching and when Sandy stepped out she was smiling form ear to ear. She walked up to me saying; “You said I was welcome anytime” I told her she was indeed, as she went to the back of her car and got her overnight bag. Now I was really getting excited at the possibilities. She told me she did not have to be back until Monday morning for class. We walked into the house and she walked straight into my bedroom and put her bag down. She asked if we could go out on the boat and watch the sunset and I told her that was a great idea. I walked into the bathroom and put my swimming shorts on and returned to find Sandy just reaching behind her tying her bikini top. She had not taken the time to adjust the cups of her top and the bottom of both of her large breast were visible, almost up to her nipples. She got it tied and then reached around to readjust her cups so they covered her breast and we were on our way. We drove around for a while and ended up in a secluded cove and just sat back to watch the sun go down. Sandy stood and said, “Let’s go skinny dipping” as she untied her top and slid her bottoms off. I watched her in amazement as this young beauty stood before me. Her breasts were large and her nipples upturned and very long with the areolas the size of tennis balls. My attention was drawn downwards to find a completely shaved pussy with a prominent clit bump at the top of her slit. She reached out to me and as I stood helped me pull my shorts down. My cock was rising rapidly as she led me to the back of the boat and eased into the lake. The cold water had little effect on my hard cock and Sandy moved over and snuggled up beside me. I felt her hand circle around my hard cock and reached down around her waist to help hold her above water with one hand as I held on to the back of the boat with my other. I pulled Sandy against me and felt her legs part and slide around my right hip. She continued to hold and slowly stroke my cock and the look on her face was pure lust. Sandy’s nipples were just above water level and seemed to be looking right up at me. I bent down to take a nipple between my lips and felt her hand on the back of my head urging me on. Her nipple was long and hard but her areola remained large. I could feel the heat of her bare pussy against my hip and was thinking of pulling her around on to my cock but she had other ideas and with out warning slid out of my grasp and went under water. I felt her hot mouth as it wrapped around the head of my cock and felt her as she slowly took about half of my cock into her mouth. When she came up for air her face lit up like a young child on Christmas morning. Her excitement was contagious and I could not wait to do more. Sandy swam over to the ladder and began crawling up into the boat. I was behind her and loved the view form behind her as she went up the ladder. Her wet pussy looked like the perfect clam between her legs as she stepped up each step and I quickly followed her into the boat and sat down. Sandy reached for a towel and quickly wiped herself dry then bending over wrapped her hair in the towel to dry, as she bent over again that perfect clam of her pussy was right in front of me. I could not resist and grabbed her by the hips as my tongue slid slowly up her slit. Her response was to stay bent over and slightly spread her legs. Now I watched as her wet pussy lips spread open to me. I could see the hood of her clit and see the wetness inside her pussy as the sun set. I started licking her pussy nice and slow and soon heard the soft moans of pleasure coming from Sandy. I continued licking her softly and every once in awhile I would circle her clit softly with just the tip of my tongue. She was beginning to push back against my face harder and harder and when I finally sucked her clit into my mouth she let out a moan and I felt her pussy suddenly cream with a soft velvety fluid, her pussy began to contract as her orgasm swept over her. Sandy turned to me and pulled the towel from her hair she shook her head and let her dark, still wet hair fall as it lay around her. Her hair fell across her chest but not quite low enough to cover her nipples as she came to me. She kneeled down in front of me as I spread my legs apart; her eyes were fixed on my hard cock as she bent to take it into her mouth. I felt her hand cup my balls as she took more and more of my cock into her mouth, it was hard to hold back as she gently played with my balls and drew small circles around my ass with her fingers... Soon Sandy was in a steady rhythm and I could feel the pressure of my impending orgasm building. I warned her I was going to cum soon and she took my cock deeper into her mouth and I felt her finger slowly working its way into my ass. I exploded into her mouth with a force I hadn’t felt in years. She swallowed the first volleys of cum then pulled my cock from her mouth to rub on her nipples as I continued to squirt more and more. I looked down and watched her as she rubbed the tip of my cock right onto the tips of her nipples. I felt drained as she finally pulled back sitting up on her knees, I leaned forward and we kissed deeply. When I looked down a drop of my cum was hanging from one of her large nipples. We drove all the way back to the condo naked, as we pulled up to our dock I pulled my shorts back on, Sandy stayed naked but slid a towel around herself. I tied the boat off and watched as Sandy ran toward the condo in front of me, pulling the towel off right before she opened the condo door. I walked to the condo thinking that I had died and gone to heaven, and heaven was a beautiful 20 year old college student waiting for me naked in my condo. Sandy pulled me to her as I entered the room. Her hands were on my waistband pulling my shorts down as she kissed me passionately. I led her into the shower and lathered her up completely as I sensuously washed every inch of her. She returned the favor washing me completely and then we dried each other off and walked into the bedroom. My cock was hard but I had an idea and sent sandy to get us some drinks. I returned to the bathroom and dug for the Viagra a friend of mine had given me a few months back. I had never taken one but thought if I was ever in my life going to need one it was probably going to be right now. I took the pill wondering just what it was going to do and how I would feel as I waited for Sandy to return. Sandy walked in holding our drinks and I led her to the king sized bed. I could not help but notice how truly beautiful Sandy was. Sandy has a large build but not by any means fat. Her legs are long and muscular, her breast are easily D cups if not more. Her pubic mound is very prominent when she stood and the hood of her clit stuck out even when her pussy lips were tightly closed. She is beautiful by any ones standards. We drank our drinks as we kissed and touched each other. Sandy laid back on the bed saying, “Make love to me” as she did. Sandy’s large breast fell to each side as she laid down spreading her nipples far apart. I slid over on top of her positioning my hard cock between her legs. I reached down and ran the head of my cock up and down her slit until it began to open and I felt the lubrication of her wet pussy on my cock head. I eased slowly forward until I felt her pussy lips opening to let my cock in. Sandy was tight, not a little tight, so tight I was having a hard time getting into. She apologized saying another guy she had been with had told her she was very tight. I was glad I had taken the Viagra because my cock felt like a steel rod it was so hard and so thick. I eased back and slowly tried to move into her again but I had only gotten the head of my cock inside before it seemed just stopped. I told her to wait a minute as I went to the bathroom to retrieve some KY Jelly. I spread it into her pussy and on my cock and again tried to enter her. This time very slowly and very deliberately I got more and more of my cock inside. Sandy was moaning and clutching my ass trying to pull me deeper but she was so tight it was just going to take awhile. I pulled my cock back a bit then eased back in each time gaining a little more until finally I had my cock all the way inside, I’m not a big guy, my cock is under 7 inches and not overly thick but Sandy was just that tight. Sandy held me tightly and I lay still just enjoying her hot wet tightness. I slowly pulled back and then started pumping into her slow and easy, after a while she loosened up a little but her pussy was like a clamp around my cock. Sandy went rigid beneath me and shoved her pubic bone upwards as she came with out warning. She pulled down on my ass tightly and held me still deep with in her until the spasms stopped. I don’t know if it was because I had cum an hour earlier or it was the Viagra but I continued to pump into her for more than 20 minutes I was beginning to feel the build up and told her I was going to cum soon. I started thrusting down into her harder and harder until I felt like I was Cumming from the tip of my toes as jet after jet of my hot cum filled her tight pussy. Sandy started to cum right after me and her pussy clamped hard onto my cock. My cock stayed pretty hard, it never completely deflated for the next hour and we continued to make love in every way we could imagine. It was a day to remember but the next day Sandy showed me her kinky side … More to come if I there is enough interest and enough votes. Please vote …