Offline/Give Nicole her suit back and sit with her
Nicole dropped your trunks but they're close enough for you to grab finally. You sit next to her with an apologetic smile and pass her suit back. She grabs it but isn't concerned about putting it back on, continuing to cower beneath the rippling waves, so you similarly abstain and crouch down next to her. The two of you spend some time enjoying the commotion around you while sitting naked under the surface of the water, a fact that's never far from your mind. You suspect you'll have a much easier time than Nicky getting back into your wet swimsuit, but at least you'll both be able to share the experience when you do.
The kids aren't ready to stop playing keep away. At least Beth's brother isn't. You watch him kick his way to shore with his sister close behind him. She's yelling but they're both laughing. Once his butt can clear the water and he stands to kick his way through the shallows, you notice what's causing this. He's holding both his and his sister's swimsuits in his hands. His sister so close behind, her bare behind is quickly up out of the water as well, her narrow back twisting to help her slosh forward.
The threadbare siblings streak their way across the beach zipping in every direction. They run in circles and zig zags, back and forth along the short beach, showing off their nubile bodies to the world, or at least to their cousins. They're both wearing water shoes which gives them a little more traction on the pebbly beach, but the only other thing they're wearing are giddy smiles.
His trunks are dropped during a sharp turn and Beth snatches them up, the chase never pausing. The brother, losing ground, turns and makes a beeline for Auntie Grace. He runs around her rock, putting your naked aunt between the two naked siblings as they race around. Grace sits up to watch them jockey for position, running and stopping, yelling and laughing. Beth repeatedly tries to reach across Grace's tanned legs to scare her brother into running the wrong way but they're at a standoff.
Your aunt watches for a while but manages to pluck the suits away from both of them with one simultaneous strike, choosing her moment carefully. Both kids yell and grab at her, but she just smirks, stands up, and walks away from her tanning bed, suits held high. Beth tries to climb her aunt, leaping up and wrapping her bare body around Grace's torso, even grabbing her auntie's tits for leverage. But Beth's brother takes a different approach. He grabs Grace's stack of clothing and runs into the river with it. She's too busy fighting Beth down her body to notice the clothes-napper until he gets all the way out to the diving board. She notices too late, her nephew already standing with her soaked stack of clothing held above his head, Grace shouts for him to stop right before he flings every piece of her outfit toward the middle of the river. The items aren't immediately swept away, but they'll find the current soon enough and they're too far out to risk swimming out to get them.
You and Nicole share an incredulous glance. It occurs to you that there are actually more naked people on this beach than clothed, although you and Nicole are being a bit less gratuitous about it..You switch your attention between the boy standing confidently on the rock with his dripping dick and the nudist woman and girl groping each other on the beach. You can't even imagine what Grace might do, but she stays relatively calm. After a moment she kneels down and whispers something to Beth, the two of them going back and forth for a bit, coming to some sort of agreement.
"It's okay Brayden! She won't get you in trouble! She's giving our swimsuits back!"
Brayden excitedly hops down and swims to shore, not a hint of remorse. Maybe he assumes his "plan" worked, and maybe it did. Grace is still holding the kids' suits, but what strikes you as odd is that Beth isn't trying to put hers on. Wouldn't Grace return her suit? In fact, Grace ends up passing Brayden's suit to Beth. The girl steps into her brother's trunks just as he waddles up the beach. Seeing this, he shouts his disapproval then runs up to strip the trunks off of her. As soon as they start to grapple Grace steps in.
"Oh yes, you're putting on a swimsuit alright... your sister's!"
Grace wrestles the suit over Brayden's feet then tugs them up his legs while Beth holds him in place. He screams and flails, his sister cackling with laughter. It isn't long before he resigns himself to his fate though, perhaps knowing he was going to be punished for what he did and perhaps also enjoying the silliness of it. Once Grace yanks the one piece up his body and he begrudgingly pulls the straps over his arms, Grace turns him around to show off 'Brenda' to the other swimmers.
The small audience in the water giggles and laughs, you and Nicole included. It's so weird seeing a boy in a thin strappy one piece with his short hair and tiny bulge trapped in the tight narrow crotch, and it's almost as weird seeing his sister standing next to him topless in shorts with her long curly hair covering her shoulders. Maybe none of it is as weird as your naked sunkissed aunt proudly standing beside them both, the catalyst behind all this stripping and flashing.
Beth grabs her brother's wrist and runs away with him in tow. He hardly lifts his legs, his sister dragging him back to camp so she can show him off to everyone. Auntie Grace walks in the opposite direction, stepping out into the water and right up to you and Nicole which gives you another close up look of her meticulously groomed pussy and her lightly bronzed perky tits.
"Can one of you get me a towel? I probably shouldn't head back like this."
"Yes! Of course!" assures Nicole. You're real close to offering Nicole's suit to your aunt when Nicky pops up from the water to step into it. You do the same with your suit, albeit slower, easily distracted by the sight of your cousin's little boobs and needing to bend your erection into your trunks. Nicole pulls you along with her as she exits the river. Being behind her, you can see how you stripping her the way you did stretched out the back of her swimsuit; the low horizontal elastic that once hugged her waist is now broken and hangs away from her body to expose the rounded tops of her ass. She probably wouldn't be impressed if she knew that, so you don't mention it.
You both hurry back to camp, Nicky dropping you off at the campfire to go hunting in her mom's cabin. You see Beth is now proudly showing off her 'sister' to an amused group of people. It's obvious that Brayden is already at his limit though. You think he's a few seconds away from snapping and stripping out of his sister's one piece in protest. You watch instead as he pushes his sister over then strips his trunks from her legs. Not what you expected.
Someone makes a weak attempt to grab Brayden but he ducks away and runs full tilt from the group which makes his stripped naked sister the new center of attention. Most people are just laughing or shaking their heads while this naked girl yells at her brother from her back. You're pretty sure if you were to strip your little sister naked at a family gathering that your parents wouldn't be quite so understanding. Someone else at least helps Beth up and offers to cover her but she is quick to shake them and sprint after her sibling in the buff.
Nicole returns as the wild pair of kids circle past you. They weave through groups of people and then through trees and bushes in the direction of their tent just outside of camp. Nicole gets a funny look on her face amazed that the crazy hasn't stopped yet. Part of you thinks they must do this stuff a lot because hardly anyone seemed to care that Beth was streaking through the camp butt naked chasing after her crossdressing brother. What a weird family you have.
The two of you return with a towel for Aunt Grace but she's not looking to go anywhere. She just thanks you both from the water then continues swimming with the few remaining kids. So you put the towel down on her favorite slab of rock and wander off, confused and frustrated in equal measure.
The rest of the afternoon isn't nearly as interesting. There's a hike that gets organized that neither you or Nicole are interested in so you hang out with the stragglers until the hikers return, still in your swimsuits. Nicole is never far from you, which is her doing more than yours. Even when someone points out the condition of the back of her suit she just shoots you a glare then pulls you somewhere else. As dinner rolls around her mom tells Nicky to get changed so she can help wash up after, two seemingly unrelated things. In fact a swimsuit seems like a great clothing choice for washing up. Nicole agrees all the same, albeit with a hint of trepidation.
Suggest Nicky borrow some clothes from another camper
Go with Nicky back to the cabin to see if her clothes are dry