"Honestly, I'm in the mood to watch some piss and ."

Just saying it meant you had to release your cock. Charlotte's asshole, her round, bare bum, the two puffs of weed you'd had were all in your head, trying to knock you off balance and trip you into cumming, which would be amazing, and a refractory period, which wouldn't.

Saying it also had a similar effect on Charlotte. She almost froze, then shuddered, groaned and her whole body visibly loosened up.

"Fuck. Me." She said in horny but scandalised near disbelief. "That's the dirtiest thing I've ever heard." She snatched her hand away from her body again and started navigating. "Fuck me! That's hot! The first thing you ask for!?" She spared a glance for you with your cock freestanding and shaking under it's own blood pressure as you desperately try not to cum yet. Focusing on smoking more seemed to help. "So you're in the mood to edge? Not me! I need to cum over and over again right now and all day until Michael and Lucy get home! Can you smell my fucking pussy? I've never been like this before! Jesus is this what it was like for Sara the whole time? Doing it with my own family is definitely better than with hers!"

She seemed to have gone back into her history and be scrolling for a while.

"This hard to find any you like?" You ask, fighting to keep your hands still.

"For you, you horny boy, I'm going to put on my very favourite."

After finding it, she re-lit her joint, and leaned back, the wet sounds of her squishy pussy lips being slipperily run over by her hands as the video revealed a group of girls smoking cigarettes out of a bedroom window, careful of the smoke wafting back inside. As they took turns on their cigarettes, they would each reveal the need to pee, and strip from the waist down, and piss copiously and casually on the floor. They were all gorgeous and the fun and flirty attitude made their piss-soaked legs even hotter.

Charlotte had her first orgasm when the video showed the door opening to reveal the mother spying on them. Dragging out the sisters and their friends into the backyard and forcing them to stay in their sexy state of undress. She became hornier and hornier watching them until finally breaking and stripping too.

At the point where the brother and father walk out to see the group sex you'd come down far enough to start chugging on your joint again and restart your exquisite wank. it was impossible to keep your speed slow and your dick seemed bigger and harder than it almost ever had been.Charlotte divided her attention between you and the screen, and your gaze raked over her in turn.

The brother in the porn film ran at first and resisted being cajoled back, the father called a cease fire to discipline his wife, but pretty soon the entire group was fucking, and the girls convinced their brother to join in without too much pushing from their sexy friends.

Then the pissing started.

Every which way and in every combination, they peed on each other's faces, bodies, over each other's arses and in each other's mouths, they were pissing in glasses and sharing the drinks, and they were spitting it back over each other without regard to who got showered.

Charlotte came twice more during this, her body shaking and her, the third time she came, confessing dirty fantasies of golden showers and drinking piss at full volume was enough for you to cum as well.

A great fountain of short ropes and big droplets which sailed for seemingly much too long before plastering your face and chest, You recoil and the next four spurts, seeming greater and more pleasurable every time, spray ontop your sister and leave Charlotte comepletely drenched, screaming:

"Yes! YEsyesyyyesyesYEScumonme!Cumonme!Cumonmytits!itfeels..." her breath hitched "...so goooooood..."

She couldn't open her eyes because of the spunk coating her face, hair, mouth and chin. Much more of your cum had flown in her direction than yours, the sticky white goo running thickly down her cheeks and forehead was an ocean to the puddles on yourself.

It had been hard to think properly since she mentioned golden showers, though. You were more into other people pissing casually without a care in the world than in having a girl piss all over you, but if Charlotte liked it, then maybe you could just ask?

"Hey, Charlotte?" You ask, much more inquisitively than earlier this morning. Man this high was good.

"Yeah?" She replied back breathlessly, still rocked by three good orgasms, still not moving to remove any of the cum, she seems to be basking in it.

"D'you mind if I piss on you right now?" Your voice gets stronger as the filthy adrenaline starts coarsing though you again, and her dirty, horny look makes your dick try to rescuscitate itself. But you find it erotic to pretend like you don't know what you're doing. "It's just that I've always got to go right after I cum and after that joint I definitely can't be bothered going all the way to the bathroom."

Your confident, questioning look is met by wide-eyed agreement, but she can scarcely nod.

Standing, you aim your cock towards your still-reclining, almost spead-eagle sister and she starts fingering herself again ferociously in spite of her orgasms as the pressure builds up. There was a lot coming.

She started moaning and swearing before the first drop even came out, "Yes! Piss on me! Fuck can we do this all the time!? From now on, us two being at home counts as home alone! Let's do everything together! Fuck!"

Your golden stream splashed her and as she writhed on the couch she began cumming again, so overwhelmed that tears formed at the corner of her eyes, drawing lines down her half-laughing, half-slack face.

As your stream continued those few tears turned to sobs of joy as her body was wracked with pleasure at the feeling of your hot piss cascading over her sexy, pale body.

By the time she opened her eyes, it was 2 o clock and your dick was rock solid again.