Sarah's Discoveries
Copyright© 2026 by DangerMouse
Chapter 4: Ejaculation
Incest Sex Story: Chapter 4: Ejaculation - Sarah (and then one of Sarah's friends) are introduced to a variety of pleasures by Sarah's older brother and one of his friends. It was originally split into four "books" but I have combined them here. This is one of my favorite stories that I got from the early internet (probably even before the web existed in the wild). I couldn't find it online when I looked so I thought I would share it here for others to enjoy. If this is your story, please let me know and I can take it down.
Caution: This Incest Sex Story contains strong sexual content, including Ma/ft ft/ft Consensual Drunk/Drugged Lesbian Heterosexual Vignettes Incest Brother Sister Light Bond Group Sex Anal Sex Double Penetration Exhibitionism First Masturbation Oral Sex Voyeurism Public Sex
Sarah sank a little further into the couch, her blonde hair splayed out behind her head, and closed her eyes. She was getting a lot closer and her fingers were working hard. A slight moan escaped her lips as she started breathing faster and heavier.
“Maybe we’re over-stimulating the poor girl,” said Rob’s voice.
“Maybe we are,” said David’s.
Her eyes popped wide open to both guys standing in front of her and staring. She didn’t care. The orgasm was building up deep in her stomach and was starting to spread through her body. She ran her left hand up to her right breast, pushing what little of the towel that was still covering her away. A cacophony of moans and whimpers punctuated her orgasm, as she lay obscenely splayed on the couch in front of her brother and his best friend, pulling her nipples and plunging her fingers in and out.
“Sorry, Dave - I can’t help it,” Rob said, as he dropped his shorts, pulled out a massive erection and started stroking it while watching the little fifteen-year-old writhing on the couch. Sarah stared at it in wonder, seeing a penis live for the first time in her life.
As the last tremors of her orgasm started to fade, she mumbled, “It’s ok. I couldn’t help myself either.” She kept her fingers between her legs, rubbing slowly. Her eyes were now wide open and watching as Rob’s hand skimmed up and down his shaft. She thought it was one of the sexiest things she had ever seen.
David’s pants were straining, looking very uncomfortable. Sarah giggled for a second, drawing his attention.
“What’s so funny?” he asked, mostly to fill the awkward silence.
“That looks really uncomfortable, David.” She giggled again, and then looked him in the eyes. His narrowed, hers twinkled. “The rest of us couldn’t control ourselves. You don’t have to feel bad, you know.” She licked her lips slowly like she had seen the redhead do earlier and made a show of touching herself. The effect she was having was making her feel so powerful. That she could even make her own brother hopelessly horny was an enormous ego-boost.
“It’s ok,” she said. “I want to see it.” She smiled and looked at him with big puppy-dog eyes, the same ones she had used to keep him wrapped around her finger all her life. The combination of her angelic face with her body language did him in.
“I’m going to regret this, but...” he mumbled, as he clumsily undid his belt and dropped his pants. Sarah gasped as it sprang out, purple and angry over being confined for so long. He quickly dropped his hand and started rubbing.
“That’s amazing,” she breathed. Her hand reached up, then stopped. She looked at her brother. “Can I touch it? Just a little? Please?” David looked panicked.
“Um ... I...”
“Pleeease?”
“Oh god ... um ... ok ... go ahead,” David mumbled. He hated himself for doing this, with his own sister. But he was a slave to his cock. He hadn’t been this horny in a long time and she was driving him crazy.
Sarah looked at David, scarcely believing that he actually said yes. “I can’t believe I’m doing this ... with David of all people...” She stopped thinking and just reached out, wrapping his erection in her fingers.
“Like this?” She got up on her knees and shuffled over so she could inspect it more closely. Once she was eye to eye with it, she decided the veined organ was beautiful, a marvelous extension of her brother’s physique. It’s current state and knowing that she had a lot to do with it made her feel proud and attractive. She slowly moved her hand back and forth like she had seen him do.
“Mmmmm,” David moaned. He closed his eyes and just enjoyed her slow strokes. It wasn’t long before he started pumping his hips against her hand, willing her to go faster. She complied and he knew he was almost there. He was just about to warn her, when he felt her tongue touch against the slit at the end of his cock, much like the girl in the video had. His eyes flew open and he looked down as a drop of precome appeared at the tip. Sarah, whose concentration was solely on the head in front of her, quickly lapped up the drop, again like the redhead. It was too much for David.
He felt the familiar surge in his balls, the rush as it streamed up the length of his cock, then the release as it shot out. The first glob shot right into Sarah’s chin. As she backed up in surprise, a second stream landed on her face, painting a line from her bangs down across her left eye, across her pert nose to end dripping off the edge of her right cheek. She fell backwards into the couch and two more shots streaked her bouncing breasts before a last dribble fell right into her belly button. Her left eye was sealed closed, but her right eye was wide open in shock.
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