It was the middle of the night when Rachel woke up hearing whispering. She shared the room with her younger sister Aliana. Being already 18 years old, she was usually very respectful. It was not like her to be talking on the phone with someone this late at night.
"What is going on? Who are you talking to at this hour?"
Rachel turned over to scold her sister and ask her to hung up the phone, but she immediately realized that Aliana was not talking to anyone. She was sitting upright, with her arms limp by her sides, staring into the wall in front of her and speaking to herself. It was very strange and a little creepy.
Oh my God! Is she talking in her sleep? Why is she sitting like that?
She couldn't understand what her sister was saying but a couple of words were clear enough, "pussy" and "yours", which only increased Rachel's confusion. Aliana's was breathing increasingly faster while she spoke, as if she was getting aroused by her own incomprehensible statements.
"m... pussy ishh yours, m p..y ss yours, Ihh m...st ser... my m..s.."
Rachel watched her sister for a moment, hesitant about what to do. She had heard that you are not supposed to wake a sleepwalker. But then, Aliana's whispering stopped and turned into a long, soft moan. Rachel saw her sister's legs twitching while her eyes rolled back. Aliana was having an orgasm!
What the hell?!
After her climax subsided, the teenager slowly leaned back, almost robotically, until she was flat on her back. Then she fell asleep instantly.
Rachel rested her head back on the pillow but her eyes were wide open. It was hard to believe what just happened. The sound of Aliana's orgasmic moan was burned in her mind. So was the image of her shuddering legs and twitching hands. Rachel realized that she was getting wet!
She had an orgasm without touching herself. I didn't know it was possible.
***
The next morning, Rachel, her sister and her brother were watching TV. Apparently, Aliana had no recollection of what happened the night before and Rachel decided not to talk about it. It was probably a one time thing.
If it happens again, I'll tell Aliana to see a Doctor.
She thought.
Rachel hadn't noticed that her brother Brad and Aliana were staring at the TV almost without blinking and their mouths were slightly opened, as if they were in some kind of trance.
With the corner of her eye, Rachel saw unusual movement on the couch. When she turned her head, she gave a gasp of surprise. Aliana had unzipped Brad's pants and her hand was reaching inside.
"Hey! What are you doing?!" Rachel asked loudly, almost screaming.
Brad was still staring at the TV like nothing was happening. Rachel couldn't believe what she was seeing. Why was Aliana fondling her brother? Why wasn't he stopping her?
After a moment, Brad finally acknowledged the situation but he just turned his head to look at her sister. They stared at each other without saying a word, yet Aliana's hand kept massaging Brad's growing phallus.
"Aliana! Stop doing that! Brad, stop her!"
Rachel was expecting Brad to pulled his sister's hand away but that didn't happen. There was something odd about the way he looked at Aliana. As if he was not looking at her but looking through her.
Far from stopping, Brad stood up and pulled his pants down. He was not wearing underwear and his fully erect cock sprang upwards, demanding attention. Aliana quickly knelt in front of her brother and grabbed his phallus.
"Are you guys insane?!", Rachel exclaimed, "If mom sees you, you both will be grounded for life!"
Rachel stood up and walked around the sofa with the intention of pulling Aliana away but when she saw Brad's cock in display, she stopped. Rachel found her brother's cock so alluring. She shook her head trying to push the dirty thoughts off her mind.
Aliana was no expert on sucking cocks but she had seen plenty of adult videos and she was planing to work by example. After sensually licking the tip for a moment, she engulfed the head of Brad's phallus and tightened her lips around its girth, then she started bobbing her head back and forth.
"Aliana, you can't do this. This is not right!"
To Rachel's eyes, Aliana was sucking her brother's cock like a pro and she was astonished. It was hard to believe that her younger sister was such a slut.
Aliana shoved Brad's cock deeper into her mouth until it reached the back of her throat. She gagged a little and quickly pulled back. Then she tried again and again. Soon she got used to it. The young woman was preparing herself to give her brother a deepthroat.
What is happening? They are acting like I am not even here.
Rachel wondered, truly confused.
After a couple of failed attempts, Aliana succeeded. She swallowed Brad's big cock all the way to his balls. Brad moaned from the delightful sensation of his sister's throat clutching his dick so tightly. Aliana pulled back for air, then engulfed the entire cock again. She did this several times while rubbing her pussy under her long top.
Wow! How can she do that?
Rachel thought, baffled by Aliana's actions.
For a brief moment, she forgot that it was her brother and sister who were performing this debauchery and she felt aroused. Then she shook her head again and came back to her senses.
Brad couldn't resist this lovely treatment for long and soon his cock began to pulsate announcing his orgasm. Aliana pulled back and opened wide just in time to receive the hot streams of cum all over her face and inside of her mouth.