All the characters in this story who engage in sexual acts are over 18.
***
The Delaneys all slept deeply and late. The sun was well up as they stirred to the exquisite aroma of Suzanne's bacon and eggs wafting around their holiday cabin.
Their dad wanted to go fishing, Mike never got into it and his sisters wouldn't even think of it. Suzanne agreed to accompany him, explaining that she liked reading her book in the open air anyway.
After breakfast the three siblings wandered towards 'their' river again, this time heading for the bottom of the rapids to have a river bath. They'd brought shampoo. It was a tradition that started one summer when the boiler wouldn't work.
This time they were in regular bathers, Mike in board shorts, Lizzie a black bikini and Sammie her orange one-piece. It was a little too small for her, so it rode up inside her as she walked.
"Hey this is great. It's like my suit is fingering me as I walk!"
When they reached the rapids, Sammie said "Hey. You know that naughty thing I like? I'm gonna do it now."
With that she pushed her hips forwards and her little cameltoe erupted in pee, pushing out in an arc at first then streaking down her thighs and calves to splash in the earth at her feet.
"Oooh, I like that. Lizzie you gotta try. Before you get your suit wet. It's better before."
Lizzie wasn't ready to go, but Mike assured her when she was ready he'd give her his lap to sit on... Sammie loved the idea too and offered her next piss to him too.
They reached the rapids and saw their parents had already arrived there and were sitting with their backs to the approaching trio. A little disappointed that any sexy games were now thwarted, they trudged on until Mike stopped them, whispering intently "Stop! Wait. Look, mum's topless!"
She was and was running her hands over her fantastic D-cup breasts provocatively. They couldn't hear clearly but it sounded like "You want some" or something similar.
Their father moved in front of her and dropped his pants. Suzanne giggled and leaned back on her outstretched arms as Paul manoeuvred his length into her mouth.
The three siblings sneaked closer and slightly to the side, where deep grass served to both hide them and improve the angle of their view.
Their father's cock was indeed long, and now hard. Suzanne was sliding her mouth along most of its length as he fed it to her. After a minute or two she gagged and withdrew.
"I never could take it all in my mouth..."
"Give me your cunt then!"
The siblings gasped incredulously. They had
never
heard their father swear like that.
They watched as their mother turned onto all fours and peeled back her bikini bottoms to her knees. Paul kneeled behind her and lunged, making her scream with erotic shock. Her ample breasts dangled down and swayed back and forth as her husband thrust into her. Her children could only watch in fascination for the minutes it took for their parents to reach climax.
Suzanne came first, mewing and squeaking as Paul's cock split her pussy apart. A minute later, Paul began to moan and pushed forwards, holding there as his climax began, to intensify the pleasure. As his balls tightened, Suzanne looked up and a stray gust of wind pushed aside the long grass her children were hiding in to watch. She saw them.
"Paul. PAUL!" He was lost in orgasm and couldn't have stopped if he tried.
Seconds later, Suzanne spoke again, still looking at the spot she'd seen her children who had now flattened themselves to the ground, looking fearfully at each other.
