Dive in naked

The splash of the cold water over your whole skin was amazing. Taking a few long strokes under the surface before popping up for a breath, you caught Michael's irritated expression and still posture. "Sorry I splashed you, just started to feel the sun on me with no lotion." You explained, feeling the gentle waves tugging your cock and balls about in the cool chlorinated water.

Your brother's shorts puffed up around him as he sank backwards into the water with a grunt and a shrug. It was sort of thrilling that he didn't mention your nudity or your hard on, but you supposed after wanking over Charlie's thick arse as she spread her cheeks and flashed you had probably permanently broken that barrier.

Lazily swimming a few more lengths, you heard footsteps coming out of the kitchen. Though they were quiet, and very soft, there was a slightly proud "slap" to the way they sounded which told you it was Charlotte before you had wiped your hair back and looked up. You were definitely the luckiest people you'd ever heard of.

No longer in her onesie, Charlie was parading out through the door totally nude. Her tits and thighs jiggled voluptuously and her bald vag gleamed in the sunshine, pink in counterpoint to her red hair. She was grinning broadly on one side, almost a smirk, and she swung her hips ludicrously with each step. As she passed the wicker, cushionless chairs and low glass table, she looked between you and over your shoulder, where Michael was obviously standing, and ducked her face slightly behind her bushy hair while squeezing her fat tits together and presenting her small pink nipples for you both. "It's so free being naked!" She giggled happily, stopping near the edge of the pool and spreading her feet slightly so that you, your brother and Charlie could all peer down at her exposed cunny together. "It feels so hot showing people how clean my pussy is and letting them see my juicy tits!" The last few days had been fun but clearly the morning had made Charlotte hot.

How fortunate you all were to live with someone who was willing to let you stare at them naked openly, even stripped off and flashed you when she could, and enjoyed wanking to porn together with you. Michael broke the silence with a hesitant grin as Charlotte's fingertip began running up and down her slit. "Did you come out here just to say that to us?" That was a sexy thought, and she'd purposefully come and given you both a look at her naked arsehole before going down for breakfast, so maybe this was a new habit of hers.

She seemed jolted by the question and looked up happily. "No, actually. I just got distracted by the way you both look at me!" She dazzled you both with a smile and half turned, arching her back and her bare legs to stick her luscious bum out for you both. "I'm actually here because I need a piss!" She finished turning and slowly- ever so slowly- she lowered herself onto her hands and knees with her amazing bum sticking up in front of you. She poked her head out from behind her own amazing hips and with her hair cascading down over her face asked eagely: "Can you see my pussy?"

A slightly startled Michael choked a "No!" before coughing abruptly. Charlie hadn't spread her knees or bent over far enough yet for it to peek out between her cheeks. She laughed to herself in a way that lit a fire in you as she bent further, putting her head against the floor and spreading her bare feet apart even further. Finally she reached back with one hand and spread her bum apart for you and her breathing got very quiet.

All you could hear for a moment was the gentle splashing of yourself and by assumption your brother both tugging your dicks in the pool still while staring rapt.

Your redheaded sister's arsehole contracted, then relaxed, then gloriously a stream of gold wee came flowing out of her beautiful twat. "OOOOOOoooooohh yeaaaaah..." She began to moan, releasing a string of humming unintelligble adulations along with her pissing into the pool you were both stood wanking in. Drawn inexorably towards the sight of the sun glinting in the piss droplets, you never realised you were actually approaching her until the first splashed tickled your chest.