"And then
she
said, what was it? Oh yeah: 'Shut up and get in the car. I'll pee when and where I want to!' Wasn't that it?"
Sarah's discomfort grew but she wanted to hear the story. Kelly went on: "About ten minutes later we're about to turn into Golden Square. Ironic, really. Anyway, Rob drives over the speed hump and I lose a bit. So I clench my hand in there, you know what I mean, and sat on my hand. Anyway, we leave Golden Square and we're on Lassiter's Track."
"Oh shit Kelly! All those bumps!"
"Yeah. So, I can't stand it after a minute or so but we're still in view of the main road, where it runs parallel."
"So what did you do?"
"I tell Rob to pull up. He stops, I open my door so I can't be seen from the road."
"And?"
"I pissed like a racehorse. Didn't even get my jeans right down. Just pissed through my knickers, into my jeans. I think I pissed for, what do you say Rob? Ten minutes?"
He laughed: "Hah hah. Not quite. Wish you had. I barely had time to get my cock out."
Sarah was intrigued now. Her hand was between her legs to hold in her pee, now its contact was getting her horny too. "Then what?"
Kelly edged over to her sister, stood behind her, bent low to whisper in her ear while her hands rummaged under Sarah's top to find her nipples: "I sucked his cock while I pissed."
"Oh!" Sarah moaned, leaned her head back onto her sister, loving the feel of her hands, the growing desperation of her bladder and now her pussy too, all the while picturing her little sister sucking their brother's cock while bent over to wet herself.
Sarah remembered one of her rare girl-on-girl sessions with Jenny -- her former husband's sister. Jenny had told her about cumming and pissing at the same time. Now she understood and wanted to try it. She unbuttoned her jeans, scooted out of them, then put her hand inside her panties. Rob watched as she began flicking and rubbing her clit. She was edged onwards by her sister's knowing manipulation of her boobs. Kelly was whispering in her ear. Rob couldn't hear, but she was saying: "You are one dirty bitch, Sarah. Your innocent little sister..." Sarah laughed then cut herself off for fear of wetting too soon. "...Your innocent little sister is playing with your tits while your brother watches you masturbate. And, you dirty girl, you're gonna piss yourself, aren't you?"
"Yesss."
"Yes. You're gonna piss all over the place, in your panties, while you masturbate for your brother. He's going to watch you cum, and piss. Open your legs for him. Let him see properly."
"No, If I do I'll..."
"Do it anyway. You like him seeing it don't you?"
"Yes. Oh yesss."
Sarah's eyes closed. She was almost there, her own fingers on her clit and her sister's tweaking her nipples saw to that. As her climax rose, Rob saw his chance. He knew her well enough to know when she was going to orgasm, and he sprung his surprise. He'd been holding it uncomfortably for some time, now he was going to empty his bladder on his sister. Her eyes were closed, lost in sensation, so she didn't know he was there until she felt wet warmth on her tits. Opening her eyes, she saw a stream of piss erupting from her brother's cock, splashing her top, soaking her tits. He pissed on her arms, her belly, her tits, back again. It was all she needed. Clasping her hands desperatley between her legs, her pussy exploded pee and she came in waves of extasy that took her away from her senses. She was aware of her hissing, pissing pussy, the warm liquid splashing her tits, the ache in her nipples as her sister still pulled mercilessly at them, and her clit. Her clit swelled, centred her feeling, became at once pure pleasure and pure pain as she cried out in both.
It was seconds, but froze as though it was minutes. Still she peed, even as Rob's stream faded. She felt her loins boil again, and shuddered with a second orgasm. Kelly's hands were kneading her breasts now. With one of her own she clasped her sister's hand, pressed it to her nipple, then urgently back to her pussy. Fingers inside, she wailed. Her enraged clit was too sensitive now, but her pussy ached for more. She wanted sex, any sex, now.
Reaching for Rob, she pulled his cock to her mouth and slurped greedily, tasting salty pee and sweat, vaguely aware that he was becoming more erect in her mouth. Again she trembled, shivered. But she was not done.
Rob gently fucked her mouth, Kelly still tortured her tits. Sarah wailed and moaned like she was in grief, not rapture. With her brother's cock still in her mouth, she spoke around it: "Fuck me now, Rob. Please?"
He knelt, pushed her backwards to get the angle, and thrust. She tensed, stopped breathing, then panted as he pushed hard. He pulled out, flipped her over easily to bend her over the chair. Placing his cock at her entrance, he pushed, hard, then again. Sarah moaned and grunted, hardly breathing at first, then panting like an athlete.
Rob was loving his power. She was entirely at his control. He thrust hard into her, watching the shock waves in her buttocks, seeing her pee, and his own, still dripping down her thighs.
In her heightened state of arousal, and despite already having reached three orgasms, she wailed again. Rob pushed in, held it there, and let her squeak out a final, draining orgasm on his cock.
And draining it was. She collapsed, sat on the floor, then pulled herself up into the chair. Her hair was stuck to her head with sweat, despite the cool night air. She shivered and trembled, clutched her arms to her chest, eyes not quite focused. Kelly and Rob simply stroked her hair and face, proud of themselves for having given her so very much pleasure.
Sarah climbed down slowly, then kissed each of the palms that were beside her face. Still she did not speak. It was sweet Kelly who finally pulled her the rest of the way back to her senses. She bent, kissed her sister's lips, and said: "You only had to ask!"
Sarah laughed, giggled, laughed again. Then she looked at the mess around them: "Shit, just look at me. At the floor!"
Rob spoke: "What am I going to do with this boner you gave me?"
Kelly beckoned him over. She took charge, matter-of factly: "Sarah, go get a shower and maybe some clean clothes. I'm gonna fuck my brother."
Sarah stood, awkwardly peeling off the piss-soaked clothes, threw them over the rail to drip before she would take them for washing. Kelly was already bent over the table, shorts and underwear around her ankles. Rob was near, then in her pussy. Sarah watched for a few seconds, shook her head at the impossibility of it all, then went to clean herself up.
The weather was changing. Sarah pointed out that now, maybe, her big bed could accommodate them all and wouldn't be so hot. So for a while, they all slept together, with however few clothes they could get away with.
It led to all sorts of spontaneous night encounters. In one, Rob was spooning Sarah. He knew it was her because he had one hand on her tit -- Kelly's were much smaller. Over the weeks, his cock had settled down so that he didn't automatically go hard at contact with their skin. That meant that not only were quick cums less frequent, it also meant more foreplay.
The night before, Sarah had told them about an anal sex encounter she'd had with a stranger. He was surprised -- she was not really a 'one-night-stand' kinda girl.
In the night air, her buttocks were cool but in between was a warm spot where his cock nestled naturally. He wasn't trying to fuck her, nor she him, but still their hips moved gently, almost unconsciously. When his cock went half-mast, though, his sister's heat was enough to awaken his foggy desire. It wouldn't be the first time he'd gently fucked either of them while they were all half-asleep. But this time his knob found its way, a little wetly, to Sarah's asshole.
"Sair? You awake?" They wouldn't care if he came in them while they were asleep, but he always asked anyway.
"Mmm. Just. You trying to fuck me?"
