DISCLAIMER: This is a work of fiction. All characters are over 18 and none of the events described are real. It is not the intention of the author to condone or encourage incestuous activity, this is a work of erotic fiction and should be seen as such. It contains scenes of an explicit sexual nature including incest so if you find such material offensive please do not read any further. Finally this story is based very heavily on a similar one I read some time ago, I don't remember the name or the story or the author but I hope they forgive me borrowing their premise and re-booting it.
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Beth and Angela left together to clean themselves off, while Kevin and Roger sat slumped in their chairs, their wilting erections the only movement. Neither of them spoke. There wasn't anything to really say. Eventually, Roger swigged the last of his beer and rose from his chair.
"I'm hitting the hay."
"Sure, I'll come in too."
Kevin followed his father into the RV, shutting the door behind him. His dad headed back to the bedroom; while Kevin settled down on the bunk next to his sister. She was lying with her back to him and the covers pulled over her; so he wasn't sure if she was asleep. He wished she didn't have the sheets over her; as he wanted to check out her ass some more. He remembered seeing her stripping off, and walking around naked, and how hot she looked. He also remembered the sight of her pretty mouth stretched 'round his dad's huge dick. Fuck, he wished he could get some of that right now. So far, all he'd had was a hand-job; and that was a reluctant one.
He felt himself getting hard once more as he imagined his sister practicing her skills on his dick. He closed his eyes and began stroking himself, as he pictured his sister slurping on his cock. He imagined cupping her perky tits. Then he wondered what it would be like if his mom demonstrated on him as she had with his dad. He thought about feeling both their mouths on him as they competed to see who could suck him the best, competing with each other as he groped their tits, his mom's huge melons contrasting with his sister's perky little titties.
"I suppose you think I'm a sicko now?"
His sister's voice shocked him. She'd been awake the whole time. He covered himself up hastily and tried to act casual.
"Um, no... why?"
"Why??? Because I just blew Dad in front of you and Mom, that's why!" she said, turning to him.
"No, I thought it was pretty hot actually."
"You did?"
"Yeah, I mean, you look really smoking anyway, and seeing you and mMm sucking on him, well, yeah, that was really hot."
"You don't think I'm some kind of pervert?"
"Well, I guess if you are I must be too; and so must Mom and Dad be, since they both enjoyed it."
"Yeah, I guess I hadn't thought of it that way."
He could see his sister was responding to his acceptance, so he plunged ahead.
"I mean, I don't blame you. Dad has a pretty amazing dick. I thought I was big; but he's huge."
"Well you're not so bad, even if you can't control it!" Beth chuckled as she looked at the tent Kevin was pitching under the covers.
There was a pause as they both reflected on the events of the evening. Finally, Beth broke the silence.
"You can carry on if you want. I don't mind."
"Carry on?"
"Jerking off. I could hear you after you came in."
She continued watching him expectantly.
"But I thought you said it was gross."
"Well, it is, sort of, because you're my brother I mean; but I guess it's also kind of hot, seeing you hard and shooting off. You can look at me while you do it if you want."
She pulled back the covers, letting him see her naked body once more. Fuck! That was all the encouragement he needed. He pulled down the covers and began stroking his cock as he admired her tits. As he watched, she began playing with her nipples, making the little nubs hard, before slipping her hand between her legs and rubbing herself.
The truth was, much as she acted grossed out, she did enjoy seeing Kevin stroking himself; but she just hadn't wanted to let him realise. Right now though, she also needed to get off herself, and watching Kevin jerking while she remembered her dad's huge dick in her mouth was just the right visual stimulation.
"You know you did a pretty amazing job of sucking Dad's dick," Kevin whispered as he whacked off.
"You think so?"
"I know so. I could tell he was going to blow his wad any moment."
"But he wouldn't, at least not in my mouth."
"Well, I figure he wanted to."
"You do?"
"Oh yeah!"
They were both stroking and rubbing themselves faster now.
"You know, you could practice on me too, if you wanted, that is?"
Kevin stopped stroking his cock and held it up for her inspection. She had to admit it was a nice dick. Not as big as her dad's, but still bigger than most and nicely shaped, curved up to a plum-like head. Beth actually found herself licking her lips as she looked at it.
"Maybe tomorrow I might. For now let's just get ourselves off. Let me see you shoot."
Shit, she was going to practice on him? He stroked himself faster now, bringing his orgasm closer. He knew it wouldn't be as big as earlier since he'd already cum; but he figured he would have enough to put on a show. Beth watched silently, as her brother stroked his dick faster and faster, before thrusting it up, his body going rigid before shooting a rope of cum into the air, which splattered back onto his chest before being followed by another, and another. She rubbed her clit as her own orgasm washed over her. Kevin got out of bed and cleaned himself with some paper towels from the kitchen; and by the time he returned, Beth was sleeping softly.
The following morning Kevin was awoken by the sound of his mom and sister fixing breakfast. He could hear them in a hushed conversation; and as he blearily opened his eyes, he was happy to see they were both still naked.
"Do you think it will really work?" Beth asked in an excited tone.
"Trust me sweetie, I know your father, if you just... morning Tiger! Ready for some breakfast?"
"Uh yeah, great." He pulled back the covers and stood up, not even bothering to hide his morning glory erection. His sister turned to look at him; and he put his hands on his hips and turned sideways to show it off to her. She turned away, but not before she grinned at him.
"Set the table, you two."
Kevin and Beth cleared away the bunks and set out the plates and cutlery, Kevin taking every chance to check out his sister's body, especially when she bent over and he was afforded a view of her pink puffy little pussy. He managed to brush up against her a couple of times, and rubbed his cock on her arm and her butt cheeks. She showed no reaction; but he noticed she didn't pull away either. Maybe she really was going to make good on her promise of a blowjob later.
They'd just finished putting the plates out when Roger emerged from the bedroom, looking a little sheepish. He was clearly embarrassed about last night; but Beth's eyes lit up as she saw him.
"Morning Dad!"
"Um, good morning Beth. Um, now, about last night I..."
"Thank you so much!"
"What for?"
