Chapter 1
The Springer family lived in the crowded city and always looked forward to the two weeks they spent at their rustic cabin by the mountain lake at the start of the kids' summer vacation.
It had always been a peaceful and relaxing holiday in the past, and they expected it to be the same this year. But the children were both a year older now - and youngsters' interests can change a great deal in the course of a year - as well as their needs and their bodies.
Luke parked the station wagon beside the log cabin and they all shared the task of carrying the luggage and supplies into the building.
Eighteen-year-old Jimmy went straight to his room in the loft, saying that he wanted to get his fishing tackle sorted out so that he would be all ready for an early morning outing in the quest of mountain trout.
In fact, the youth had gone up to his room to jack off. Sitting beside his sexy little sister during the long ride, he had managed to ac-cidently rub his elbow on her plump tits, and it had left him in desperate need to empty off a load of cum.
But his mother and father didn't suspect that - although maybe his impish kid sister did, because she had not only been aware of his elbow, she had even squirmed against it, loving to get the boy horny.
Linda was like that.
Turning boys on gave her a real kick.
But the blonde teenager wasn't really a cock-teaser - because she liked to take care of the boys after she had gotten their cocks stiff, too.
Martha, Luke's lovely, curvaceous wife, busied herself in getting the food supplies on the shelves and readying the primitive kitchen. She wanted no help in that, and Linda asked her daddy if he wanted to take a stroll down to the lake where they usually swam, fished and boated.
Luke agreed, and they set off.
His daughter walked slightly ahead of him as they went down the rough trail. Luke noticed, not for the first time, how much his little girl had filled out recently. Her tits were bouncy and her trim little ass wriggled provocatively as she walked ahead of him.
He felt a bit embarrassed by what he was thinking, but kept his eyes on that adorable little ass.
Soon, they came to the lake.
It was a beautiful spot, with a shallow shoreline ringed by pine trees. At one place, a rocky cliff rose from the lake and a sparkling waterfall came down. They knew, from past exploration, that there was a good-sized cave hidden behind the waterfall.
It was a warm day, and Linda dipped her toes in the cool mountain lake, kicking spray up, laughing happily.
"Let's go skinny-dipping, Daddy!" she suggested.
Luke looked a bit embarrassed. They had gone swimming naked in former years, to be sure. But Linda had been a flat-chested little girl with a hairless pussy then. He wasn't at all sure if they should swim au nature! now.
But her attitude was so gay and innocent that he knew it still seemed perfectly normal to the girl - or so he thought - and he figured that it would be more embarrassing to have to tell her why he thought they shouldn't than to simply go ahead and join her in a naked swim.
Luke believed that he had sufficient willpower to keep his lust under control.
Of course, he didn't expect deliberate provocation, nor did he have the slightest idea - yet - just how flirtatious and tempting his sweet little girl had become in the past year. He didn't know that the little minx had become accomplished and practiced in making cocks stiffen.
Linda was already stripping down.
Luke followed suit, trying not to stare at her, but intrigued by her lovely, nubile body.
Linda was slim, but shapely. Her tits thrust out invitingly, capped by big, rosy nipples.
Those fat tit-tips were stiff and swollen, too - but he naturally assumed that was because she had been dipping her toes in the cold water.
Her cunt mound had sprouted a bush of golden blonde hair, curly and tangled and, he had to admit, delectable.
He dropped his pants. His prick twitched, and he sent a stern mental command down to his loins, insisting his cock not shame him by becoming rampant.
The cute nymphette ran lightly through the shallows, then dove and began to paddle around.
Luke followed her into the lake. The cool water helped his willpower, and his prick stopped twitching.
But not for long.
As her daddy waded towards her, the nimble teenager suddenly fell back and began to float face-up. Her feet were towards her father, and her thighs were parted.
Luke had to stifle a gasp.
Her plump tits were floating on the calm surface, like beach balls that had been inflated by the swollen pink valves of her nipples.
And her pussy-slot was open and juicy.
Luke groaned in dismay and blushed with shame as his mind engaged in lustful thoughts. He began to swim about vigorously, determined not to let the innocent teenager notice how her sweet body was affecting him.
Now his balls were swelling massively, and his prick had become hard as a crowbar. Luke was mortified. He had a hard-on that he could have rowed a boat with - or poled a flat bottom barge. As long as he was swimming facedown, he was safe from discovery - but had a good idea that this enormous boner was not about to go away until it had been properly serviced.
He tried not to look at her, but his gaze kept drifting back.
She was diving under now, her lovely legs and shapely ass heaving above the surface. Then she swooped up, water spraying from her tits. She rolled over onto her back and floated again.
If Luke hadn't known better, he could have sworn that the girl was taunting him with her naked charms!
But that couldn't be, certainly.
After all, he was her father.
And her father had a big problem.
How in hell was he going to get out of the lake and get his clothing back on without letting Linda get a look at his booming hard-on?
He grasped his cock under the water and jerked it with vigor, thinking that maybe he could milk his cum-load off in a submarine hand-job.
But it was hard to jack off underwater, he discovered. And, too, he knew from how enormous his balls were that he was going to spill out an awful lot of jizz - and the stuff was lighter than water. It would be embarrassing if his daughter saw his cum floating like frothy flotsam on the surface of the lake.
What in hell was he gonna do?
The little water nymph was splashing about, laughing in glee, seemingly unaware of the shameful position she had put her daddy in. But she kept glancing in his direction, too. He knew that he couldn't emerge from the water without revealing his stiff prick to her.
His face was red with guilt - and his prick was so hot that it felt like an immersion heater on his groin. He almost thought that the water might start to boil.
Suddenly, he saw a solution.
Or thought that he did.
But Luke didn't really understand the situation at all. He thought of Linda as a kid, which she was - but she was a whole year older than the last time they had been skinny-dipping together at the lake, and she was also rather precocious for her age.
She had planned the whole thing.
Sitting in the back of the station wagon, letting her brother rub his arm against her tits, she had amused herself by making the boy horny - but the process had made her little pussy begin to simmer, as well.
Linda had been hot for her father for months - and today she was brazenly setting her scandalous scheme into motion.
Luke swam towards the tumbling cascade of the waterfall. He was doing the Australian crawl, face-down and churning the water. It felt as if he were propelling a log under him, as his huge prick jutted up along his belly. And his balls were so buoyant and bloated that they made his ass bobble up as if they were water wings.
He could feel his dong dribbling. Globs of hot pre-cum were seeping from his piss-hole.
He swam as fast as he could, desperate to reach his destination before he unloaded his creamy cum right into the lake. He was headed for the rocky outcrop where the waterfall spilled down past the hidden mouth of the cave.
He figured that he could crawl from the water, keeping his back to the girl and, passing through the waterfall, he could slip into the cave. In that stony shelter, hidden from sight, he would have a chance to beat his meat and drain off the cum-load that was keeping him hot.
He knew he would get his rocks off easily, with only a few fast strokes, in his present state of arousal. And he didn't see any reason why his little girl would be suspicious about his brief disappearance under the waterfall.
He reached the boulders where the cool water foamed and frothed as it fell to the surface of the lake. He crawled up, belly-down. His cock was so stiff that it was pumping like a crowbar against the rocks, almost levering his bare ass up.
Without looking back, he passed through the cascade and crawled on into the damp, mossy-walled cavern. The cave was not dark, because shimmering light filtered through the curtain of pouring water at the mouth.
He got to his feet on the slippery rock floor, made sure that his footing was firm, then folded his fist around his rampant prick and began to stroke towards a creamy conclusion.
But he wasn't able to shoot as soon as he'd expected.
Because the rocks were so slippery underfoot, he was having trouble beating his meat and keeping his balance at the same time.
Newtonian laws came into effect.
As he jacked down vigorously on his cock, slamming his loins back, it naturally caused his feet to slide forward. Having to pause to regain his equilibrium, he kept missing out on a stroke and losing the rhythm that would have drained his balls efficiently.
He decided that a fast and furious frigging was going to be counter-productive.
The laws of equal and opposite reaction were confounding him in his well-meaning mission, making him flounder and preventing the prick-pumping that would diminish his hard-on and save him the shame of having his daughter see him that way.
He moved over to the arched wall of the cavern and leaned back against the slimy stone surface. Bracing against the rocks, he began to jack off again, skimming his fist up and down slowly and steadily instead of frantically.
This more gentle action enabled the man to keep his balance, but it was also prolonging the job. So it was going to take longer than he had planned.
Long enough, in fact, for Linda to join him ... Cum floats.
The cock-lube that had seeped from Luke's hard-on had risen to the surface and come drifting back to where the young girl was standing in the water.
She knew damned well why her daddy had gone into the cave and would have been affronted if the red-blooded man hadn't gotten a hard-on looking at her nubile body as she flaunted it so outrageously.
The scummy film floating to her only reaffirmed her convictions. She scooped a glob of fuck-juice flotsam from the surface and worked the slimy stuff between her thumb and forefinger.
She rubbed some into a taut nipple.
Linda was getting plenty turned on now.
It always made the naughty nymphette randy to get a man turned on, and making her own handsome father hot enough to dribble was driving her wild.
She flicked up another blob of jizzy scum on her fingers and brought her hand to her mouth. Her saucy pink tongue slid out and she tasted the salty cock-lube.
"Ooooooh!" she sighed.
Her father's pre-cum had cooled and congealed in the water, but it was still delicious.
And if the stuff tasted so lovely even cold, she could just imagine what it would be like to swallow a steaming load of cum straight out of his spurting prick.
Linda hadn't really intended to be that naughty.
She had only planned on teasing her father by flashing her tits and cunt.
But now that she had the taste of her father's cum tingling on her tongue and warming up again in the heat of her mouth, she just couldn't resist.
Whatever inhibitions that little tart might have had had melted in the inferno of her desire.
She began to swim towards the waterfall.
And thanks to the laws of Sir Isaac Newton, she got there before her daddy shot his wad . . .