Summer Inside His Sister Pt. 03

She remembered that one time her phone buzzed at 3 am, rousing her from a tangle of limbs that she and her kids had collapsed into after their final romp in her bed. Ethan had woken up, too, and he quietly followed Mom to the living room, where she opened her laptop and started investigating the root cause of the alert.

As she lay on the couch on her stomach, with the curve of her scrumptious ass softly illuminated by the computer screen set to low brightness, it was really only a matter of time before her son would take advantage. He did just that, of course, by pushing his large, freshly hardened dick into her instantly lubricated pussy; it elicited only a weak protest from his surprised mom.

Unable, and in all honesty unwilling to repel her son's invasion, Linda spent the next half an hour diagnosing and then fixing the misconfiguration that caused the outage. Meanwhile Ethan was right behind her, enthusiastically plowing through his mom's hot, tight, dripping wet hole.

"Brotheeeer," Katie drawled, back in the present, as she slowly pushed the (formerly Mom's) dildo into her snatch and fucked herself with it in the absence of her brother's cock. "What about meeeee? Why don't you fuck *my* pussy now, and have Mom just swallow your next load?"

Ethan chuckled, loving how his sister's horny mind worked. His dick was clean now, so he crawled to where she had been sitting on his bed, kissing her deeply as he pulled the fake penis from her stretched orifice. Moments later, the void he created was already filled with his big, still-rigid cock.

This was how every day looked for Ethan now. For the past month or so, the bulk of his time was divided between fucking his insatiable sister Katie, fucking his nympho mother Linda, and also fucking them both together. In this short time, the boy's life had made a complete U-turn, as he went from being a sexless virgin to having multiple wild threesomes with his insatiable family every single day.

Thanks to his out-of-control teenage hormones, as well as the intensely erotic atmosphere that permeated their family home, he had no real issues keeping up with the demand. In the presence of two gorgeous women in his family, who remained naked and available to him at all times, Ethan found himself sporting nearly permanent boner, his 10" cock always ready to satisfy their boundless cravings. His workout regimen proved to be very helpful here, as he was now fit enough to fuck his horny sluts for hours.

"Ah, so good..." his mom moaned, scooping up the plentiful seed that he had deposited over her round breasts and putting it all in her hungry mouth. Her gaze then wandered to the incestuous couple, mating less than two feet away from their mother, and she chuckled. "You two can't be serious! Again?!"

Katie only moaned in response, and Linda couldn't help but laugh.

***

The sun was setting on their secluded backyard, earlier and earlier with each passing day. Long rays were bringing forth, and enhancing, all the natural shades of orange and bronze. Included in this was the beautifully bronzed skin of Ethan's sister Katie, not a single tan line on her sleek, nubile body.

"I can't believe how much you have grown and changed," her mom said wistfully, looking at her naked kids who lay on the lounge chair next to hers. "This has been a very memorable summer indeed..."

More precisely, it was Ethan who lay directly on the chair, with Katie lying on top of him and being spooned by her notably more muscular brother. His hands were wandering between her ample breasts, flat and toned tummy, and her glistening, engorged labia. The siblings were joined by Ethan's wide cock, throbbing steadily as it sat inside the silky depths of his sister's wet pussy.

"You're right, Mom" Katie said with a sigh, wordlessly asking her brother to contain his urges for a moment. "I had no idea that time could go by so quickly, but it's true: the summer is almost over..."

Linda gave an amused chuckle. "Yeah, it sure does fly when you're fucking your brother for god knows how many hours a day!"

"Sheesh! Pot and kettle, Mom," her daughter retorted, rolling her eyes and laughing.

"Right, right, guilty as charged," Linda said with smirk. "What can I say? A man like Ethan is pretty hard to find."

"But at least he's hard when you *do* find him," Katie quipped with a laugh, making her brother groan as she visibly tensed to squeeze his shaft with her pussy muscles. "Yup, still up and ready! What are you feeding him, Mom?"

Linda snorted a laugh, too. "I think it's mostly your fault, Katie. You turned us all into some kind of incestuous sex maniacs! I'm not really complaining, of course, but we have to get a hold of ourselves soon, or decide how are we going to deal with this long term," she said, looking meaningfully at her daughter. "Especially you, darling..."

She blinked. "Why? What about me, Mom?"

"Well, you still need to decide whether or not you are going back on campus."

The girl's eyes went wide like saucers. "What? Are you saying that there is a choice to be made here?"

"Sweetie, I know I've been whacking you over the head with how important I think education is, but maybe you shouldn't take it as gospel," Linda said, her face lighting up in a warm smile and fully capturing her daughter's full attention. "Life always happens; and when it does, we all have to adapt. It's obvious to me, for example, that you'd rather stay close to your brother than live a thousand miles away, so perhaps you can figure out how to make it all work..."

"Yes please, Mom," Ethan chimed in, feeling his hard cock perk up and twitch. "I would love to have Katie around!"

"Oh, I'm sure you would, honey," his mother teased him. "Why settle for just one horny woman, who's ready to take your cock insider her at a moment's notice, when you could have two of them instead?"

A shocked gasp escaped Ethan's throat, but the expression on his face was hopeful. Could he really keep Katie around, too? He already got Mom... In fact, it was precisely because of his mother that he had slightly changed his post-graduation plans.

The change wasn't significant, because Ethan was under no delusions that his grades would grant him access to a prestigious university. He had already been admitted to the local community college, and he had no compelling reasons to reconsider this decision now. What he did change, however, was the exact curriculum of his courses. He switched some of them around, dropping some unimportant ones and leaving only those that he would be able to attend fully remotely.

It was really a no-brainer, considering that his mom had already switched to working from home weeks ago. Ethan wanted to be a good mamma's boy, and to keep her company in the best way possible: by sticking his hard dick inside her needy pussy whenever she'd tell him to!

"I... I do want to stay close to Ethan," Katie admitted, glancing up her brother's chin, "and to you, Mom. Because I love you both, and I'm still horny enough to want to fuck you silly!"

"Oh, do tell me about it, sweetie," Linda said, a little ruefully but with a clear note of mischievous satisfaction in her voice. "This summer had us spiral totally out of control, and it seems like a lot of this craziness will remain with us for good. And you know what? Maybe that's not really a bad thing..."

"As far as I'm concerned," Ethan said, groping his sister's body shamelessly, "that is not a bad thing at all!"

The two women burst into gleeful laughter, their exposed breasts jiggling enticingly. The vibrations from Katie's giggles were sending delightful shivers down the boy's swollen cock.

"Okay, but seriously," Katie began, once they both calmed down a little, "if I could do it like Ethan and take all my classes online... I mean, it should be possible these days, right? Then I could just stay home with both of you."

"Sure, that would work," Linda said, then added teasingly, "but wouldn't you be missing all these cute boys that you could meet on the campus?"

"No way," Katie immediately disagreed. "None of the guys there could ever compare to Ethan!"

Her brother beamed a cheeky smile, and his cock twitched within Katie's hot canal.

"Well, well, who would've thought?" her mom mused. "My cock-crazy daughter speaks like she has found someone truly special..."

Katie rolled her eyes again, giggling. "Mom! I told you that Ethan is just my, you know -- brother with benefits."

"Alright, whatever you say, sweetie," her mom conceded with a chuckle, languidly stretching in the lounge chair and sighing in contentment. "In any case, it looks to me like you know exactly what you want. And honestly? I'm glad. I think your brother would've been too much for me, even with my current, ahem, appetite..."

"Oh, don't worry, Mom," Katie reassured her, smirking as she sat up on her brother's hard dick. "Between you and me, Ethan should have enough on his plate to occupy most of his free time. I know that I'm definitely going to jump on his cock every chance I get!"

"Yes, kids, but remember," Linda switched to a motherly tone, raising her finger for attention. Even totally nude, she still managed to command respect among her children, irrespective of all the sexy things they wanted to do to her voluptuous body. "Study first, then fuck! As long as you stay in my house, these are the rules."

The siblings burst out laughing, as they showed her thumbs-up and nodded. Satisfied and rather amused, Linda put her sunglasses back on and picked up the iPad to continue reading some steamy romance novella she had found on the internet. It wasn't long before her hand traveled to her nether regions, a finger or two working itself inside her moist pussy.

Ethan watched her for a moment, until his sister once again started riding and bouncing on his massive hard-on. As he got more and more into it, fucking her right next to their mother, he couldn't help but wonder how correct Katie had been.

Their mom was just *really* cool!