All characters in this story who engage in sexual acts are over 18.
*****
After a week of incest at the family hideaway, the Delaney family left the National Forest for the remainder of the journey home with Suzanne wearing pale blue underwear with a thin white beach dress over the top. Her summer dress had been soaked when she squirted all over it. She wasn't usually a squirter, only when she was super-hot, but she'd had two squirting orgasms watching her daughters. One had ridden their father's cock, the other his face, and her son had ejaculated on both his sisters' faces. Quite a morning.
The back seat of the twin cab was a hive of adolescent sexuality. Sammie had no panties under her short denim skirt, because she'd given her family a panty-wetting exhibition. Lizzie had removed her bra as a perpetual tease. Sammie encouraged her to keep the t-shirt damp for effect, but it wasn't needed. Poor Lizzie's nipples rubbed at the fabric with every vibration in the car and they stuck out prominently for the whole trip. And Mike. Mike always had a boner, it seemed.
Now that all five family members were involved in this incestuous relationship, the only restraint on sexual activity in the car was the risk of being seen. Despite constant states of arousal though, the morning's shared sex had satisfied all except Sammie so apart from occasional kissing and petting in the back seat, the rest of the journey was a model of family normality.
But for Sammie, her traditional position in between her older twin siblings gave her a new horny opportunity. While they sped home on the open road, Sammie leaned her back on her sister, put one foot behind her brother's back with the other on the floor, thus opening her legs wide facing Mike. While her sister stoked her titties through her T-shirt, Mike probed her newly-shaved pussy with his fingers. Not urgently, but sensually. The twins worked as a team, bringing their little sister to the edge of orgasm, then easing off when her breathing and moaning became rushed.
Sammie was in heaven like that for fully twenty minutes, on the verge of climax, until her father spoke slyly in his 'do as I say' voice: "For heaven's sake, do I have to stop and come back there before you guys behave yourself?"
Sammie panted: "You'd be welcome daddy, but... Oh...M-Mike and Lizzie seem to h-have it under control.. Mmfh". Lizzie nodded at Mike and they pushed their sister harder until her thighs jerked in concert with her jerking belly, as she pressed her nipples against her sister's tweaking fingers in rapture and cam on her brother's hand.
In her afterglow Sammie kissed her sister and brother on the lips, lingering sweetly, before resuming her sitting position as if nothing had happened. The only sign that something out of the ordinary had happened was Mike making a show of licking his sister's juices off his hand and Sammie's flushed face and perspiring brow.
And then they arrived home. It was still daylight while they unpacked and made dinner preparations. That first night at home would set a new pattern of sexuality for them for years to come. The frantic start to their episodes in the cabin gave way to an open, loving, more patient and inclusive relationship free of guilt or jealousy.
After dinner, Suzanne was exhausted and went up to bed. Paul lazed in the pool for a while, being joined briefly by a topless Lizzie. There was no sexual contact between them, more a display of their comfort with each other.
Sammie and Mike watched a movie together, she nestled in her brother's strong arms on the double-sized beanbag. During some sex scenes - which two weeks ago would have been intensely embarrassing for them both - Sammie responded to Mike's obvious arousal by casually stroking his penis through his shorts. Neither took it as much - it now seemed entirely normal and natural.
Over the coming days and weeks, their lust for each other became subtler, less urgent.
After Suzanne and Paul returned one day, they walked past the lounge room where Lizzie was going down on Sammie. Paul stopped briefly to watch until his wife pushed him past the doorway, telling him to give the girls some privacy. That episode did, however trigger a family code to warn the others if they were bringing somebody else in the house.
Another time Suzanne got out of the pool and paddled towards the back door to pee. Mike playfully blocked her path.
"Wow mum! Your wet body is even hotter than ever!"
She looked down at the erection forming in his Bermuda shorts.
"Mmm, so I see. Hold that thought son, but first I need to pee."
"Nope."
"Oh. I see. What is it? Pee my panties for you? Pee
on
you?"
"Oh, I don't know. I only got as far in my plans as making you pee. Oh I know. Lizzie sat on my lap and peed once and that was pretty cool. OK?"
"OK. There, on the picnic chair."
Mike sat, thighs together, while his mother straddled his legs facing him and sat down. She reached behind her and untied her bikini top, letting it fall. Mike nibbled her nipples and fondled her breasts, his erection poking into his mother's slit awkwardly.
"Hop up a sec mom, I wanna get rid of the shorts."
With them gone, Mike's cock nestled between his mom's ass cheeks. Her skin in contact with him was cool from the wetness of the pool, so the shock of heat as her piss flooded his lower stomach, cock and thighs made him gasp.
Suzanne stopped the flow and giggled, looking down at her son with her hands lovingly cradling his head: "More?"
"Mmm, lots more."
"Here's some..."
Psshht. Psshhh.
"Gosh mom that's hot. Sexy hot
and
temperature hot."
He worked his hand inside her bikini bottoms and over her mound. Her clit was the one in the family that responded best to direct pressure, which Mike gave her now.
