Yes, let's see bed time.

You lie in bed, dick still pretty hard after a whole evening spent desperately trying not to daydream about your afternoon with your sister Charlotte. Michael was sitting at his desk, near the window. His desk and your desk, both with clunky old desktop computers on them, were placed next to each other, as were your beds. Left side of the room belonged to you, right side belonged to him.

You got the door, and he got the window, but sharing the space was more complex than that. For instance, you were pretty horny tonight, but there was no privacy in here to have a wank. You were definitely going to have to wait until Michael left for work again in the morning to have a chance. You were pretty sure that Michael (who usually had the room to himself while you were away for school) was waiting tonight until you started snoring before having his own daily wank.

You honestly wouldn't have minded him stroking his tool in the bedroom when he wanted, or seeing him watching porn on his computer, as long as you got the same deal in return.

But not tonight. Tonight you just wanted to sleep, and skip forward to tomorrow, when Sara had said she'd be able to visit.

***********

Your sisters, Charlotte and Lucy were in their beds watching a film together. Charlotte was paying more attention to the film, while Lucy was occasionally scrolling on her phone.

Charlotte had her eyes rapt on the film, which was reviewed as sexy and dramatic and foreign. She'd chosen it, after not being able to get her memories of you stroking your cock out of her head all day. She'd finally achieved her fantasy of being peed on, and had loved it. She wondered if there was enough light from the screen or Lucy's phone to see the wetness on her pussy.

Their beds were beside another, barely enough space to stand between them, and while Lucy sat atop her sheets up against her headboard wearing only a t-shirt, her bare 23 year old arse sitting on her pillows, and her knees up under her chin while she looked mostly at her phone, and occasionally, stared over her sister's prone form ahead of her at screen illuminating her silhouette in the dark room.

Charlotte was lying on her belly fully nude, head on a pillow she'd placed at the foot of her bed, face three feet from the screen, staring up at it. one leg was bent so far out that her knee and foot was actually across the gap on Lucy's bed. Lucy could definitely see most of her exposed pussy and arsehole. If thinking about watching porn with you this afternoon hadn't been making her wet, then spreading herself like this for Lucy would have on it's own.

They both paid more and more attention to the film until Charlotte asked: "D'you mind if I pee in here?" And looked over her shoulder, catching Lucy staring directly into both her holes as she processed the question, which had obviously surprised her.

Gathering herself, she nodded and her expression was intrigued as Charlotte took her gym water bottle and unscrewed it, then as Lucy slowly opened her legs, illuminated in the corona from the blue light of the screen behind her, she began to fill it.

It was forceful, and Charlotte moaned deeply as she released what must must have been an immense tension inside her as the piss hissed in through the open neck of the bottle. Lucy knew her pussy was wet now, the film had been going forty-five minutes and was already turning her on, but this felt so much naughtier than any other time they'd done this together before.

"I wish I could do that at my desk at work." Grinned Lucy, as Charlotte finished filling the bottle and screwed the top back on. She sighed deeply with relief, her skin with a light sheen of sweat as she spun, bent into a knee-together squat and presented her bum dazzlingly as she tucked the bottle deep under her bed until later.

The way her pussy looked sanchiched between her thighs would be seared into Lucy's retina for a long time.

Resuming her original position, Charlotte sunk back into the immersion of the film.

Lucy lightly stroked her pussy lips as her legs fell gently open, staring at the sex on screen and her naked sister. When this film was done, she'd decided to ask "Charlie" her little sister to join her in the shower together, where Lucy would take her turn to piss.

*********

Your mother was in her room, talking to your father while stroking his hard cock in their bed. "There was a lot of piss and **** porn on the family computer's search history today. Did you sneak home from work for a wank?"

"Definitively wasn't me who did that, worked hard today you know." Your mother smiled before leaning down to take his cock in her hungry, delicate mouth. One suspect eliminated, but there was no way to tell which of her grown children had made the search, since ****, at least, was something every one of them had in their repertoire of searches over the years, some going back more than others. finishing a particularly long lick, your mother spoke.

"I don't know which of them it was, but d'you want to watch what they were watching?"

His eyes widened and his cock engorged further at the thought.