Tim looked at his sister, Sally, standing there with her skirt hiked up around her waist. He was certain there must have been a look of wide-eyed surprise, as well as a slack jaw, on his face. The last time he had seen her in the nude was when they used to bathe as younger children, and this was definitely a completely different set of circumstances.
"Sally," Tim said in shock. "What the fuck are you doing out here?"
"I guess the same question could be asked of you," Sally replied with a smirk. "But the answer to that is already obvious."
"You gonna answer my question, or not?" Tim continued, now flush with anger.
"Oh!? Is this a private party, Timmy?" Sally asked, sarcasm practically dripping from each word. "To answer your fucking question, I got bored at the house and went out for a walk. If you didn't want to be caught with your dick out, literally, you shouldn't have been so damned loud!"
"Guys," Andrea said from her seat. "Hello... I am still here... and last time I checked this was MY private place."
"So, it's that way, is it?" Sally asked, fuming as she straightened her skirt. "This is your place, and you get to choose who can be in here, huh?"
"Sally..." Tim said slowly, trying to diffuse a rapidly escalating situation. The last thing he needed was his sister running back and spilling the beans to the rest of the family.
"That's not what I meant," Andrea interrupted. "Look, you just caught us by surprise, and tensions are obviously high. Please stay..."
Tim watched the emotions that flittered across Sally's face. She had always worn her feelings on her face, and after years of antagonizing each other, he was pretty confident he could read her mood. Finally, she settled into a feeling of accepting the offer and stepped further into the cavern.
"So," Sally began. "How long have you two been..."
"Never," said Andrea, quickly. "It...it..."
"I happened onto her just like you did us," Tim said, finishing Andrea's thoughts.
"So, what I saw..." Sally continued. "... it just sort of, happened?"
"Something like that," Andrea said with a sigh. "If I remember correctly it started with Timmy calling me a 'grade-A bitch'. Or, something like that."
"Sorry, guess we didn't teach him well enough about first impressions with the ladies," Sally said with laughter.
"Ha ha," Tim replied sarcastically. He then flushed a deep red when he placed his hands on his hips and it dawned on him that he was still standing there naked as a jaybird.
"No, no, he was right," Andrea said good-naturedly. "I am a grade-A bitch."
"Well, if I am going to be staying..." Sally began, as she pushed her skirt down to the floor and began removing the rest of her clothes.
Tim watched as his sister shed her clothes, revealing herself to both of them without any sense of modesty. All of his life, he had seen Sally as nothing more than a nuisance and someone he was forced to share his existence with. It never occurred to him just how sexy she had turned out, at least not until he saw her standing before him in all of her glory.
"There!" she exclaimed, turning to face them after piling her clothes on top of Tim's. "Much better, don't you think?"
"When in Rome, huh?" Andrea said laughingly.
"Yep," Sally laughed in return, placing her hands on both ample hips.
Tim ran his eyes over Sally's naked body, truly seeing a new side of his older sibling. While she was definitely plumper than Andrea was, there was a certain sensuality and confidence in how she held herself. She was a larger girl, she knew it and she was comfortable with it.
To begin with her breasts were even larger than he had ever thought. He had seen her bras in the laundry before, and knew she was a 36DDD, but this was the first time ever seeing them in the flesh. He knew he didn't have much to compare her with, but her breasts looked almost perfect to him. Try as he might, he couldn't tear his eyes away from them.
The way they flared out to the side, almost forming a natural "V" as they hung side-by-side, was sexy as hell. Her skin looked almost perfect, like she had been airbrushed by God himself. It was a perfect shade of white, almost pale, and her breasts were topped with the largest pink areolas he had ever seen. They looked to be easily 4 inches in diameter and in the center of each were the nipples the size of large pencil erasers.
His eyes continued down her body, taking in her thick waist and wide hips. She just stood there, her legs slightly spread as he openly gazed at her silky smooth pussy. Even from where he was standing, he could see her puffy pussy lips extending beneath her, so pink and so inviting.
"Damn," Sally said, interrupting his thoughts. "Perhaps I should start calling you 'big brother'?"
Tim was suddenly painfully aware of his erection, as his cock revived itself and pointed directly at his sister. He turned bright red and shook his head as he tried to wash away the thoughts he was having of his own sister. No matter how sexy Sally was, it just felt...wrong. Instead he turned and looked at Andrea, who was at least not related to him by blood.
Andrea was just sitting there, staring like he had been at the now naked Sally. He couldn't help but notice that she had taken to massaging her breasts, and tweaking her nipples softly. There was a look of pure lust in her eyes as she glanced back and forth between the two siblings.
While Andrea pulled on her nipples, Tim was shocked to find himself comparing her to his sister. Now that he had someone to compare her to, he didn't know which he preferred more. Where Sally was thicker and had 36DDD breasts, Andrea was thinner and looked like she had 24B breasts. Regardless, they were both sexy as hell, and truthfully, at that point he would be satisfied if he could just have sex with either of them.
"What did you say?" Sally asked.
"Nothing," Tim replied with a confused look on his face, wondering if he had said the last part aloud.
"No..." Sally said, stepping up and grabbing him by the shoulder. "You said something..."
