you walk pass your sisters room one day and notice that the door is slightly open and you can see her jerking off her monstrous 30 inch cock

YES OH GOD YES AHHH AHHH

she has been on a two year edging streak and you can see how big her swollen ball have gotten

Your sister nods vigorously and continues to stroke her thick cock before speaking through gritted teeth, "Yeah man I haven't even cum in over two years... it's fucking agonizing!" She lets out a deep breath before looking at you. "You wanna help me with that? Make me feel good?"

Your sister seems surprised but pleased by your offer and nods gratefully. "Thanks... just help me out until I'm about to cum..." She winces as she starts stroking her huge cock faster. After a few moments, you notice her eyes roll back into her head and she begins to pant heavily, clutching at the bed.

Well I was hoping that... you know, once I start getting close... maybe we could both enjoy it together? Get each other off? It's been so long since anyone touched me like that... and you're the only one I trust not to laugh or run away when they see how big I am...

Your sister gives you a pleading look, her expression caught between wanting relief from her self-imposed torture and fear of rejection.

Your sister nods quickly and eagerly, her breathing still labored as she strokes herself faster. "Y-yeah... just let me... get closer..."

The pleasure coursing through her veins is intense as your sister continues to pant heavily, eyes squeezed shut and fingers working furiously on her cock. With every stroke, you can feel the tension building within her body, the head of her dick starting to throb and pulse against her palm.

She whimpers softly, arching her back as she inches closer to release. "Almost... gonna..." She moans hoarsely before gasping for air once more between words, "...cum..."

Your words send a jolt through her body and she lets out a loud moan as she finally loses control, her muscles tensing and releasing in powerful spasms around your fingers. Wave after wave of hot cum erupts from the head of her dick, splattering against your hand and arm, covering both of you in thick, sticky liquid. Her entire body trembles as she gasps for air, her voice raspy and hoarse from hours of moaning and panting.

Finally, after what seems like an eternity, the orgasm begins to subside, leaving your sister glistening with sweat and exhaustion, but more relaxed than you've ever seen her. She turns to look at you with a mixture of gratitude and wonder in her eyes, licking some of the cum from your fingers as she murmurs, "Thank you... that felt so good..."

Your sister giggles awkwardly before looking away, her cheeks flushing with embarrassment. "Sorry... I haven't... um... I guess it's been a while since anyone helped me like that." She pauses, debating whether to continue. "Do you want me to clean you up?" she asks quietly, tilting her head innocently.

Your sister smiles reassuringly and slowly climbs off the bed, straddling your lap in the process. She reaches around to unbuckle your pants, careful not to jostle her still-throbbing cock too roughly, and slides them down, revealing a very large erection straining against your underwear. Her eyes widen slightly at the size of it before she gently pulls your boxers down as well.

With a gentle smile, she places her hands on either side of your shaft, feeling its warmth and weight in her palms. "There," she whispers, stroking you slowly. "Let me make you feel better too." She starts to stroke you faster, murmuring soft words of encouragement into your ear as she watches the expression on your face closely, trying to gauge what feels good.

Her fingers move in concert with her words, caressing and

Your sister seems to sense your willingness and trust in her touch as she continues stroking you expertly, her fingers moving effortlessly across your length, working you towards release. She moans softly in pleasure as she feels your cock begin to swell in response to her ministrations, her grip tightening slightly around you.

Her breath quickens and her own arousal begins to build once more as she watches your face twist in pleasure. With one last hard stroke, she can feel you start to pulse and throb against her hand, the hot cum spurting out across her palm and chest. She moans deeply, closing her eyes as some of it drips down between her breasts, licking at the small patch of hair below them while still working your shaft, milking you for every drop.

Finally, she looks up at you with a contented smile, using one hand to w

After you've finished cumming, your sister sits back on her heels and looks at the mess she's made on her chest and stomach, a small smile tugging at the corners of her lips. She glances up at you, her eyes sparkling with mischief. "There, all clean now." Leaning in, she kisses your softening member before using her free hand to help you back into your boxers and pants. With a final smile, she stands and turns away, heading for the bathroom to clean up properly.

As she brushes her teeth, she can't help but wonder if this is the beginning of something new between them...or just an awkward one-time thing.

Cleaning you up didn't take long; she merely used some tissues and wet wipes on herself, making sure to remove as much cum as possible. As for the mess on her bed and floor, that would have to wait until later when it wouldn't be quite so obvious. Afterward, she returned to find you sitting at the breakfast table, already munching on some cereal.