Offline/Set the siblings straight about bringing anyone to your cabin

"What? Brayden! What's wrong with you?"

"Yeah, Brayden!" echoes Beth.

"It's not your cabin, it's my cabin. I'm just nice enough to let you stay with me. And I don't want everyone coming to my cabin!"

"Duh! Don't you know better?" adds Beth.

Brayden honestly appears sorry for wronging you, not expecting such a reaction, but is just as quickly distracted by his sibling's righteousness. However, Brayden can barely start bickering with Beth when a disinterested May butts into the conversation.

"I wanna find my sister."

Wade thinks about that for a second, shrugs, then tells May they can check the kids cabin. You almost warn him about the girls changing in there but decide not to, instead assuring him that you're positive that they'll find her.

"Can we still go play at the cabin, Jay?" asks Beth. "That's all that I had wanted to do!"

"Uh, yeah, sure," you reply.

"Yay! C'mon!"

Beth grabs your arm and starts to bound away, full of energy. Brayden frowns but is quick to follow. A moment later as you head down the path you hear a gaggle of high pitched squeals from across the camp which makes you smirk. Serves your sister right for yelling at you.

You and your roomies spend a solid hour romping through the field next to your cabin fooling around. You play a couple different games including tag, which they are both excited to play with you. It's not the best game with three people, and less so when both the siblings focus on tagging you, but you indulge them. It's also a little punishing as the field doesn't have much shade and there isn't any cloud cover this morning to protect you from the sun. Jeans were a bad idea today, that's for sure, but you easily slip your shirt off mid game to cool down and keep the fun going. Brayden follows suit right away, trying to copy you in all things. You have half a mind to goad Beth into doing it too, but it's best to leave well enough alone whenever the Bs aren't arguing.

As soon as you're tapped from running around, working up a serious sweat in your jeans despite being shirtless, you lay in the tall grass looking for relief. Brayden joins you, stretching out quickly along the ground. Beth wants you to play a "love" game which is some weird playground cats-cradle rock-paper-scissors hybrid that you barely pay attention to, your fingers mingling with hers long enough to satisfy her.

Still full of energy, Beth starts doing wobbly cartwheels in the grass by herself and you harass her for not being hot. Both siblings all but scold you for wearing jeans in summer. The point is well taken as your legs are sweltering and soon you're the one being goaded to strip. You don't mind though. Laying back in the grass in little more than your boxers is weirdly freeing, and finally cooling, but you're not allowed to rest for long.

Beth wants to know if you can do a handstand. Brayden tries to shoot her down but you're open to trying. Kicking your legs into the air you flip all the way over onto your back right away. The grass is long but it barely cushions you. You try again and again at Beth's insistence as she works to coach you, Brayden stewing and refusing to participate. Something tells you this isn't about gymnastics but you can't nail down why until Beth yanks on the side of your boxers as you kick forward, pantsing you to mid thigh just as your legs swing upward. Your hand instantly dives for your junk, flashbacks of gym class frightening you into action, which makes you land on your head upside down. All you hear are a pair of giggles as you crumple to the ground with your cock flopping about, but the joint laughter breaks almost immediately.

"Beth! Go away! You're just annoying!"

"No I'm not!" Beth expects to have to defend herself further, but her brother quickly turns to you instead.

"Why do you keep doing what she wants to do?"

"Huh?"

"Because he likes me more than he likes you!"

"I don't like anyone more tha-"

"You totally are a leech you know! If Jay's mom hadn't been at the bus you'd be stuck with all the babies in the kiddie cabin!"

"Well I'm not, so there!"

No wonder Uncle Mike doesn't like dealing with these two. "Brayden, it's fine. It was just a pran-"

"Girls don't even know anything about real camping anyway!"

"Says who?"

"Says your face! You're brushing your hair and wearing matching outfits and doing girlie things! Boys can live in the wilderness! Girls would get leaves stuck in their hair and die from crying if not for us."

"Nuh-uh! Girls can do anything boys can do!"

"No you can't! You have way more rules than boys do. Girls in my class can't even take off their shirts for recess soccer!" Brayden drives the point home by slapping his bare chest proudly.

"Oh yeah?" Beth confidently strips off her top, shaking out her hair and baring her own chest without a hint of hesitation, turning you into the topless trio and daring Brayden to claim there's something else she can't do. "Guess what? This isn't recess, buster!" she quips sharply.

"Big deal. You still look like a dumb girl."

Enraged, Beth tries to offer another comeback before she has a eureka moment. She suddenly turns and runs away, Brayden equal parts vindicated and apologetic.

"Aw, c'mon. What, are you gonna go cry now?"

"I need to get something!"

Curious, you and Brayden tag along. You arrive at the cabin at the same time that Beth exits it. She's wearing a baseball cap, her hair tucked up into it, hiding away her lengthy locks.

"Hey guys," she says in a raspy high-pitched voice. She proceeds to scratch her armpit, put her hands on her hips, then spit air, doing her impersonation of a boy. Weirdly the hat does manage to do a lot to mask her gender, although her short teal leggings completely gives it away. The subtle contours of her bare chest also hints at what's really between her legs (if the camel toe didn't already) but it's not as obvious as you first felt when you watched her strip off her top. It would be fair to say she's more androgynous now, but she's still pretty cute.

Beth's new hat helps the siblings laugh off their disagreement and make them forget what they were fighting about. It's decided Beth's new name is Bobby and Brayden makes it his mission to teach the new kid the lay of the land. The three of you hike around the edge of the clearing until your rumbling stomachs tell you it's lunchtime and you naturally redirect the heading of your hike back toward camp.

You have a mild bout of embarrassment when you step out of the woods and realize you're wandering into public still only wearing your boxers. Pausing with indecision, the siblings press you forward so you can help introduce everyone to Bobby.

Bobby draws twice as many compliments and comments from your aunts as Beth did earlier. Bobby sells it though, a blade of grass in his mouth and tossing out comments like "Looking good" and "Need me to lift anything" which garner plenty of chuckles. The other kids are just as interested to meet Bobby, crowding around as lunch comes together. You still feel underdressed in your boxers, but the smattering of swimsuits sitting on logs and camping chairs helps you not only blend in but gives you something to look at while you eat.

It seems what you walked into earlier at the kids cabin was 3 girls trying to decide how to share 2 swimsuits. Yulia didn't pack one so Asha and Em wanted to help her out. The result, all three of them still dripping wet while getting their food, had Yulia going topless in Asha's bikini bottoms (the skimpy thing barely covering the smaller girl, so you'd be curious to see Asha in them) while Asha wore your sister's one piece, and which left your sis to figure out a very stringy bikini top which she awkwardly matched with a pair of white panties. You'd say Yulia's outfit had to be the most scandalous if only because you've never seen a girl that young in a proper bikini before, but there was something about seeing your sister in soaking wet white panties that made your brain twitch in a weird way.

All of your inappropriate thoughts went right out the window when Aunt Becky showed up for lunch, because the thoughts she put into your head were too damned appropriate. Aunt Becky has a matching swimsuit with her daughter - perhaps the very same size of suit - and seeing that sultry goddess step carefully on her tiptoes wearing that revealing attire all the way back to camp dripping wet and totally aloof to how fire she looked just about made your dick pop through the front of your shorts. You could feel yourself blushing as your aunt shared that there weren't any towels left at the beach, and you tried to keep your head down when she bent forward to wring out her hair, allowing you to catch some underboob as her tits tried to bounce free from their undersized triangular restraints.

Despite the commitment to the role, the allure of Bobby wore off before lunch was even over. The other kids are more interested in getting back to the water, leaving you, B & B to return to your cabin to continue playing, the siblings knowing well enough now not to invite anyone. Although it pained you to leave Aunt Becky looking so good, it was too dangerous for you to be around her in just your boxers; the guilt of how hard you got while eating with your family was plenty enough to scare you away.

Beth (still set on being Bobby) happily plays second fiddle to her brother who leads you all on a challenging route through the trees next to the real path. By the time you get to the field you all only have a few minutes of energy in you before your legs are looking for a rest, so you dip out of the even more aggressive afternoon sunshine and agree to sit in your cabin for a while.

With no obvious way to prove his manliness inside, Brayden tries to play up "guy things" even more. He starts talking about manly sports like rugby and football, and how dumb girls are, and how the only thing they're good for is making things smell nice. Beth goes along with everything, nodding her head and jeering those dumb girls, firmly one of the guys. Until some other topics make her curious.

Brayden really starts rambling and oversharing, having held the floor for far too long, and eventually admits to kissing a girl from school before summer vacation started. Beth is super supportive and it's hard to tell if she's still playing as Bobby or honestly rooting for her brother, but she wants more details. He starts in on an overzealous explanation of what it was like, so much so that you instantly question his story, but you still hang on every word. Seeing the mix of swimsuits at lunch really stirred up the hormones you'd fought against this morning, and picturing a steamy makeout session has your chub coming back for a fight.

The tall tale is ended by Brayden with more oversharing, claiming that the kiss was so good that he popped a full boner (which impressed the girl, of course) and he had to pretend to be sick to get out of class.

"Yeah, totally! But... what does popping a boner mean?"

"Nothing. Nevermind. It's just a guy thing."

"Sure, sure. But, um... how do you pop one?"

Brayden furrows his brow when Bobby so clearly turns back into Beth. "It just happens sometimes, lay off."

"But I don't know how it works... I mean, of course I know! Obviously!"

"Good."

"Do, um... do guys usually pop boners together?"

Brayden shrugs, looking down at the floor. "Sometimes."

"I think that's a literal circle jerk," you offer with a chuckle.

"Yeah, it's called a circle jerk," Brayden sassily parrots to his sister. "Girls can't even do it."

"I could too! If you show me I mean..."

"No you can't. You don't have a dick."

"I can pretend, Brayden! Sheesh!" she huffs. "Everyone thinks I'm Bobby!"

"Yeah, well you can't pretend to have a penis."

"Brayden! Are you going to show me or not?"

Brayden turns to you with a mischievous but hesitant grin. "Should we show her, Jay? I mean, if you want to. We don't have to. I just thought, maybe..."

He looks plenty shy about it, but from the way he's talking this won't be the first time he's jerked off with other guys before. Meanwhile you're positive that Beth really doesn't know what she's asking for. As awkward as it might be, the look on her face alone should be worth beating off alongside Brayden and would finally scratch the itch you've been holding back for days.

Jerk off with Brayden to shock Beth

That's too weird. Turn down Brayden's offer and get back to playing