Taylor's fitful night of sleep was starting to get on her nerves. It had to be past three in the morning and the youngest of the Casey family had yet to fall asleep for more than 20 minutes. She just couldn't get comfortable on her thin air mattress. Even with a thick sleeping bag on top of the mattress for an added layer of support from the hard ground, her side was killing her and laying on her back just wasn't cutting it.
She was about to shift to her other side when she heard a scream that startled her. Taylor's eyes immediately flew open and she sat upright. It was pitch dark in the tent she shared with her twin Allison who was soundly asleep, still she blinked her eyes and tried to get her pupils adjusted to the darkness.
What was that noise? she thought. Did it come from our campsite? It certainly sounded close. And was it a scream or was it more of a cry of pleasure? She couldn't be sure and as she sat upright, still as a statue, she hoped to hear the sound again.
It didn't come. 10 minutes passed and all she heard was some rustling from the neighboring tent which her older siblings Aiden and Elle occupied. Blankets were moving and she definitely heard the sound of something falling, but no voices were discerned, and no more screams that was for sure.
She wanted to tell her sister what she heard, but she didn't want to be the asshole that woke someone in deep sleep while sleeping in a tent on hard ground floor. She could attest how hard it was to find sleep in such a circumstance and would be livid if someone woke her. It could certainly hold until the morning.
Instead, Taylor mulled the possibilities mentally. More and more she thought it came from the same area where her brother and sister were sleeping. Likewise, more and more she thought the scream was more an excited outburst and not really a scream at all. She tried to still her mind and settle into her bedding next to her sister, to feel her warmth and let it send her asleep. It took some time, but perhaps 30 minutes later her tired body finally succumbed.
******
Dawn's early light spread over the Yosemite trees and shone through the tent of Aiden and Elle. The mating calls of all manner of birds could be heard but little else. It was barely 6 in the morning. Still plenty early for campers to be up and about and no one in the Casey vicinity were.
Elle stirred. The light hit her eyes and forced her awake. She was still curled up on top of her brother, both fully nude below the waist with a blanket covering their bodies up to her shoulders and Aiden's sternum.
Elle thought about things as her brain awoke to the new day. It was Sunday, the twins' 18th birthday. The family would be headed to the lake house on the beautiful Lake Tahoe today and a party would commence later this evening. In the here and now, though, Elle felt alive, still high from her early morning sexual activities with her younger brother who she enjoyed laying on top of at the moment.
Having crossed that invisible line of what was permitted to do with one's sibling and what wasn't, Elle thought she would be suffering feelings of guilt, perhaps even shame. But she wasn't. In fact, Elle was surprised at how little it bothered her to know that she and her brother had oral sex.
So what? she thought. We love each other, we're adults, it made us feel good, it made me happy and him, too, I think... I'm good with it. In fact, if he's open to it, I want to sleep with him more.
A half hour passed as Elle laid there resting her head on Aiden's chest, lightly stroking the hairs on his abs while Aiden slept. Elle reached over for her phone and checked the time. It was 6:50. She wanted to do something active this morning. She felt like a run and maybe a swim before breakfast. She peeled herself off her brother as lightly as she could as to not disturb his slumber.
She moved over to the door of the tent and zipped it open reaching for her bag which was left outside again to save space in the tight confines of the tent. She was careful to keep her lower half hidden as she was still nude. Elle found a bikini bottom and another pair of shorts, this a pair of tight gym shorts that fit well over her tight-fitting bikini bottoms.
Next she grabbed some socks and her running shoes. As she laced up her shoes just outside the door of her tent, Aiden came to life.
"Good morning, Aid."
Aiden ruffled his short hair and rubbed sleep from his eye. Stretching his arms and back, he noticed Elle outside the tent, tying her shoes.
"Morning. Where are you off to?"
"I'm headed for a run then a swim in the lake. Want to join me?"
"Sure. Give me a minute."
Aiden pushed the blanket off of him, but as he revealed his soft cock and fully nude body he quickly gathered it back around himself.
"Umm Elle? Can you hand me my bag?"
Elle grinned. She saw her brother flash her and quickly gather the blanket back up. He was sexy even in his morning shyness.
"Sure, Aid." She grabbed the bag and tossed it to him. "Here. I'll just be out here waiting for you, ok?"
She walked off as he muttered an acknowledgment.
While Elle was out on the road, just outside of her family's campground site stretching her long legs and arms waiting for her brother to join her for their run, she remembered what day it was.
"Omigosh!" she said to herself quickly and hustled over to her sisters' tent.
Elle zipped open the door to Taylor and Allie's tent, saw the two of them cuddled together under their blanket and clambered in to snuggle with her sisters. The two of them opened their eyes simultaneously to find their sister lying down in front of Allie who was nearest the entrance Elle came through and welcomed her into their makeshift bed.
"G'morning Elle," Allison said quietly, still not fully awake.
"Morning Elle," Taylor echoed. "Are you here to cuddle with us? Why do you have your shoes on?
"Happy birthday, Tails!" Elle said happily, her voice loud enough to carry over to the other tents. She hugged her twin sisters each in turn, giving them as warm a hug as she could remember giving them. She kissed them each on the forehead, stroked the hair away from their face as she held each softly by the cheeks.
"Look at you both! Adults now. I'm going to cry," Elle said.
Tails simply smiled back at their elder sister.
"You two are so beautiful, so smart, so full of life and positivity. I love you so much. Happy birthday. Tonight is going to be a blast!"
The three girls shared a group hug then. Allison kissed Elle's cheek, said "Thank you" and Taylor's smile was impossible to wipe away.
"I am going for a run and a swim with Aid right now, but when we get back we will have some sister time. Okay?" Elle questioned. She held the hands of both her sisters in her own, held their eyes with her gaze.
"Sounds good," Taylor said.
"Let's do it," Allison affirmed.
"Perfect! It's a date! See you two soon," Elle said as she let them go with another brief hug and crouched her way back out of the tent.
Finding Aiden waiting for her now outside of the campsite, she gave her brother a warm smile, remembering the orgasm she shared with him just hours earlier. She felt a little sheepish about it, a little shy, the butterflies of being around a hot guy were back.
What was going on? This is my brother!
she thought, trying to compose herself.
"Ready?" Aiden asked. He was checking his sister out. She looked amazing even at this early hour in the morning, no makeup, no shower. His sister was effortlessly gorgeous.
Elle nodded and Aiden took off, setting an easy 7.5 mph pace that the two of them could handle easily. Their long legs fell in step together side by side.
******