Work Text:
Dipper was reading a novel as he sat in his chair, feeling dazed, trying his best to focus on going through the pages. He’d been stuck in one paragraph of the story, repeatedly reading through it from the first word to the last, the words seeming to be incoherent and vague, draped by the silky linens of his bored mind, his concentration slipping in and out of reach. Realizing he was going nowhere, he decided to take his eyes off momentarily from the book’s string of letters and pull himself back in to the real world. He shook his head, the feeling of familiarity returning back to him, his eyes glazed and feeling just a tiny bit drowsy.
He sat up straight, stretching in his seat, chancing a look at his sister that currently sat with her friends, his gaze slid across the room from the window to his front, slightly squinting from the brightness of the noon sun, traveling to his left, his sight landing on the person he’d been missing, longing to feel her warmth. The moment his eyes laid upon his sister’s form, he took a sharp inhale of breath, getting caught in his throat and his heart skipped a resounding beat.
Mabel shot him a cheeky sly grin, eyes half-lidded brimming with mischief, looking quite coy and flirty, coupled with a trace of visible smugness as she watched Dipper with a delighted and amused expression, internally giggling as her brother struggled with great difficulty on attempting to tear his eyes away from her gaze and mostly from the wonderful view she was currently giving him a small peek of: her lacy pink panties under her skirt, which she was currently holding the hem up just enough for him to get a delectably good view of from where he sat without raising suspicion on what she was currently doing.
Her heart raced with excitement, the idea of almost getting caught and doing such a thing in public causing her to feel hot and bothered and her face showed, her cheeks turning a shade of crimson, feeling a rising heat crawl up her neck through her ears, feeling awfully giddy and at the same time embarrassed at flashing her twin brother a good bit of her plump peaches.
Dipper's jaw flew open, his eyes almost bulging out of their sockets, wide as saucers, heart thumping so rapidly he felt like he just ran a marathon, thinking if he was having a panic attack because of what he was seeing. His twin sister was giving him a wonderful show of a lifetime while they were in class, granted it was free time and the room was mostly empty aside from her group of friends that sat beside her, even then, with great difficulty, he tore his eyes off his sister and her lingerie momentarily, visibly straining with great effort to scrape his gaze off away from her crotch as he swiveled his head to look around, making sure no one else was sitting beside or near him that could also see what he was seeing.
Deeming it safe enough with a silent nod to himself, he looked back at his sister, his eyes trailing from her flushed face, down to her smooth thick thighs, and his gaze slipping in between, staring directly at her groin.
She crossed and uncrossed her legs several times, her strong thighs squishing delightfully- how much Dipper wanted his head between them, he thought- when they rubbed over each other as she did so, giving her brother a dazzling slideshow of a small slip of her bright underwear during, the pink colors of her undergarment just barely peeking through, her downstairs lips seeming to love the attention her twin was giving, and the way her every movement seemed to mesmerize him.
He could not for the life of him stop staring at his sister, too engrossed and enamored by the sight of her beautiful face flushed red, looking quite shy and her fiddling with her skirt and the way she sat, for him to look away. He was feeling incredibly hot, and his pants- with all the reasons that pretty much called to him and took all of his attention like a siren's song- tightened along with the growing hardness of his bulge, thankful he was wearing jeans so it wasn’t too visible, even then with a close enough look, his large erection was still showing, as noticed by his sister that was still teasing him, with nary anyone's suspicions.
Dipper cursed to himself, swallowing hard, suddenly perspiring, grabbing the collar of his plaid shirt, and unbuttoning the first top buttons to let some fresh air in to awash his body with the cool spring air, hoping it was enough to help him snap out of his daze, but every time he stole a glance toward Mabel he couldn’t help but be engrossed by the way her eyes drooped flirtatiously, her smug grin and the way she'd bite her lower lip, as if calling him, challenging him- daring him- to go to her and do something about the raging boner that was bulging through his shorts, her blushing face basking in the glow of the sunlight filtering through the windows, a prismatic dance of vibrant colors scattered by the tree leaves just outside, giving her beauty a stunning angelic quality, the way her panties kept momentarily flashing in his line of sight whenever she played with her skirt to let him sneak a peek, it was way too much for his hormone addled mind and he so badly wanted to just engulf her with his kisses and nibbles then and there, to indulge in the wonderful delights she’d been showing him, attracting him- luring him- much how a hunter would lure it’s game.
He wanted so badly to encroach his lips around her delectable peaches, take a big hungering bite of her plumpness and indulge himself in her sweet juicy goodness and make her feel the entire spectrum of unbridled ecstasy of guilty pleasurable delights, to make her reach her climax, to make her feel the intensity of his love for her, to make her experience her own bursting supernovae, to turn her into puddle of sweetness and whimpering moans, and goodness, soon enough, he will.
He curses to himself, repeating, making a promise. He will, he just needed to be patient, and by the looks of it, his sister shot him a knowing look that she knows what he'd been thinking, that he wants her as badly as she wants him, and she gave him a sultry smile and a lusty, lingering and longing hungry look through half-lidded eyes, telling him silently that she was looking forward to all of his ministrations and affections soon, before snapping her attention back to her friends, with a last triumphant and satisfied smile his way, she sat more reservedly, pulling her skirt over the length of her thighs just above her knees, and turned her body away from him much to her brothers visible disappointment- and at the same time, relief- acting like nothing had happened, and joining in her gals' conversation.
‘Fuck’, is all what Dipper could think, letting out a breath he hadn’t noticed he had been holding, attempting to still the pounding in his chest, wiping sweat off his brow as he finally managed to look away from her sister, back to his book, seating himself into a more comfortable position once again and trying his best to hide his still hard and solid erection. He gulped, hoping the day would pass quickly enough, because right now he was finding it quite difficult to concentrate, and he just wanted to go home, wait for their parents to sleep, and barge in his sister's room and eat her out to her heart's content.