His head throbbing, Scott slowly began to wake from his forced slumber. The first thing he noticed of his new environment was the immense weight seemingly wrapped around his torso. Shifting slightly, he tried to shrug it off but made no difference to it.

Feeling Scott’s attempts to move between her thighs, Jackie also began to wake. She couldn’t help but notice how comfortable she was this way. Usually she’d sleep with a pillow between her legs, but Scott made an excellent hot water bottle. Her huge hips and ass covered most of his chest, all the way down to his upper thighs.

Still feeling the effect from her drinks earlier, Jackie slurred as she spoke, “goOd Eveni…ng bro! You’re so f-fragile now…” She ran her fingers across his face playfully, “Remember when y-you used to pin and t-tickle me?”

“Get the fuck off me!” Scott shouted, trying his best to lift the leg she had pinning him to his bed.

“Aw someone’s being a little cranky pants!” Jackie teased as she began to tickle him across his body. Scott couldn’t help but laugh, more out of uncomfortable instinct than anything else, as her fingers came perusing across his vulnerable body. He squirmed beneath her, desperate for his freedom, but her fat ass and thighs kept him pinned as she began to grind herself against him; tickling him all the while.

In his frustration, Scott spat, “Get off of me, you fat cow!”

The tickling stopped immediately, and Jackie’s expression of humour and playfulness switched to one of growing fury. She leaned forward, bringing her face closer to his, her bikini-clad tits hanging down over his face. Her nipples were rock hard, in spite of the sudden change in mood. “Take it back, pipsqueak!” she yelled, bringing her left hand around and smacking him hard across the face.

Scott felt as if she had just dropped a cinder block on his head, his already throbbing brain feeling as if it were now rattling in his skull. Tears welled up in his eyes, and his cheeks blushed red, “N… no, just st-stop!” As she raised her hand once more, threatening another blow, he began to cry, “Okay, okay! I’m sorry!”

“Sorry for what?” she asked, unsatisfied with his apology. She kept her hand menacingly above him, a similar force eager to strike him once more if she didn’t hear what she wanted.

“F-for calling you a cow…” Scott uttered in submission, trying his best to shield himself from a second hit.

“Damn right you are! How dare you call a girl fat?” Jackie began to rant, “Don’t you know how self-conscious that makes me?” She raised her hand even higher than the first time, “I should really make sure you learned your lesson…”

“No! No! Please! I learned my lesson!” Scott replied quickly, terrified that she’d hit him harder. Desperate to avoid any further beatings, he tried his best to elaborate, “I’m really sorry! Y-You’re not fat. I'm j-just jealous. You’re so popular and strong! And…” he looked down, embarrassed.

“Keep going, squirt…” Jackie replied, her tone already softening.

“And… And beautiful!” Scott finished, praying it was enough.

“Alright... How do I know you’re not just saying that so I don’t smack you again?” she asked inquisitively, trying her best to disguise the flattered, smug smile upon her face.

“Because it’s the truth! C’mon, you’re the hottest girl at school. Everybody knows that, okay? P-Please don’t hurt me anymore!” Scott said as he continued to squirm beneath her. Having previously been trying to escape from between her thighs, he had since opted to try and tuck himself further between them for protection.

Her smile turned to a devious grin, “I knew it! God you’re such a perv.” She leaned in even closer, bringing her face awkwardly close to his. He could feel his body beginning to overheat beneath her as her huge body surrounded him. Having her this close, with her tits in his face and her nipples seemingly harder by the second, it was only a matter of time before he was rock hard. He could feel his cock twitching in his Speedo, as it slowly began to grow.

It didn’t take much before Jackie could feel it pressing against her, as it struggled to fight past the fabric of the tight Speedo. “Oh my God! Are you getting a hard-on?” she asked, feigning shock. Lifting her hips slightly, she slipped her hand down his body. Staring dead into his eyes,  she wrapped her fingers around his junk. “I bet this is turning you on!” she said as she squeezed his balls in her hand and felt his cock grow.

“What a freak!” she shouted, “Your big scary stepsister beating the fuck out of you turns you on?”

“N-no, you’ve j-just been sitting on it, is all… And with all of you… like… right on top of me… Just please stop!” Scott begged. He really meant it too, he wanted nothing more than this all to be over right now. The feelings he couldn’t control, the humiliation, the lack of power he had - it was all too much.

“Wait until Vick hears about this!” Jackie laughed, her nostrils flaring as she looked down between her legs at his bulge and gripped it harder. She continued, “Not gonna lie bro. You really do have a pretty fat cock for a small guy… Between the buzz I’ve got going, keeping you in line, and just seeing how… small you are...”

She paused for a second as she bit her lip. Scott seized his opportunity to stop her before this got any further, “Please! Just let me go. Nobody has to hear about any of this, and we can just stay out of each other’s way until your Mom gets home.”

“Until Mom gets home? Oh no, no, little bro. You’ve got it all wrong. You may be a perv, but you’re packing heat! And you’re all I have right now, so…” Jackie replied, starting to moan as she was grinding her pussy against the side of his body and rubbing his junk through his Speedo. 

“B-but you’re my… my stepsister! I d-don’t want… I’ve never… b-been with…” Scott stuttered in response, terrified and overwhelmed by the confusing situation. His cock was consistently throbbing now, at its maximum size and oozing with precum. 

“Yeah I know, you’re a virgin. Who would want to fuck a pathetic, little dweeb like you?” Jackie spat, her tone beginning to turn more sensual as she continued to speak, “But I’m horny and, like I said, you’ve got a nice dick. Plus, I’m feeling this whole size difference thing we got going on.” 

She moaned louder, releasing his cock for a moment as she slid her hand between her own legs, “Fuck! It’s got me wet just thinking about it.” Scott can only watch, horrified, as her fingers begin to massage her vagina through her bikini.

“Jackie, please. This is wrong!” Scott begged. He was quickly silenced as Jackie wrapped the fingers from her other hand across his mouth, allowing only muffled groans as he squirmed beneath her.

Feeling herself becoming more and more soaked down there as she rubbed, Jackie slid her bikini aside - exposing her swollen lips covered by a relatively unkempt bush. “I’m not sure if you realise this already, bro. But I don’t care!” Jackie replied as she sat up on top of him.

Tugging at his Speedo, she began to pull the stretchy fabric down. Scott’s erect penis fought to stay contained, the only thing stopping his bottoms sliding down with no resistance. Jackie continued to tug, watching eagerly for the moment it sprung out in front of her.

Finally, Scott’s cock slipped out past the fabric of the Speedo and bounced before her. “Wow!” Jackie mused, almost salivating at the prospect of having such a thing inside of her. Her loins longed for it, even if it was her stepbrother’s.

Shifting uncomfortably beneath her, as she sat on top of him with one knee either side, Scott tried to climb away. “Please Jackie!” he said, attempting to roll over and crawl.

Jackie quickly grabbed his shoulders and dragged him back into position. Raising her hand, she slapped him across his face just hard enough to remind him who was in control. Scott whimpered as he held his face. He lay beneath her, still, scared to make another move from his current position.

Reaching down between her legs, Jackie gripped his cock in her hand once more and guided it towards her wet lips. Before sliding it in, she teasingly rubbed the thick head of it against her sopping lips and oozed her juices out onto it. Moaning, she asked, “Aw, you like that?”

Scott writhed beneath her, unable to stop himself from enjoying the feeling. He jerked his neck to one side and dug it into the sheets beneath him as best as he could, not wanting to face her as she raped him.

As his cock became nice and moist, Jackie slowly began to lower herself onto it. She moaned out loudly as it slipped deeper and deeper into her, its fat tip pushing at her insides as it made space for itself in her tight cavern. “Fuck bro! This feels amazing!” she moaned, gasping as she sat down fully on top of it.

Despite how it felt, Scott couldn’t allow this to happen. Clutching at any reason for her to stop, a thought sprung to mind, “Wait! What if you get pregnant?”

“Nice try, bro.” Jackie countered, as she lifted herself up off his cock, it slick with her viscous juices, “But I’m on the pill.” She slammed herself down, causing the pair of them to moan loudly at the immense pleasure.

As Jackie began to rhythmically pump his cock in and out of her, Scott couldn’t help but feel embarrassed, yet insanely aroused at the same time. Her weight on top of him was a lot to bear as she painfully bounced her hips up and down. Tears streamed from his eyes as he looked around for any sort of salvation, all attempts to shift out from beneath her stopped by her vice like grip around his cock, and her hands ready to hold him in place if necessary.

“Stop fighting it, perv!” Jackie shouted. “We fit nice together. I knew all those kegel exercises would come in handy. Am I good and tight for you?” she asked, slowing her motion to a sensual ride for a moment as she maneuvered herself up and down the length of his shaft. “I know you like it,” she whispered.

Jackie continued to ride Scott, each pump of his member into her bringing him closer to orgasm. Scott could feel his balls beginning to tighten as his body prepared to cum. Jackie could feel his cock growing even more inside of her, she grinned deviously at him as she realised what it meant. She slowed once more, giving each motion her full attention as she ensured his cock rubbed along the entirety of her slick, soft insides.

Knowing he was about to cum was really beginning to overwhelm Jackie with lust, she could feel her own muscles beginning to contract at the thought of it. Her moans grew in volume, and her breathy gasps became more frequent as she did her best to milk his cum out of him.

Unable to control it, Scott gasped out as his cock suddenly erupted inside of her. Jackie’s moans turned into what may as well have been screams as she was overcome by her own ecstatic orgasm. Ripples of pleasure coarsed their way through both their bodies, Scott’s cock continuing to spurt its cum into her for a good fifteen seconds.

As Jackie came down from her orgasm, her body tingling, she said, “Oh my God. That was amazing. Did you like…” She stopped as she noticed tears streaming down Scott’s face and asked, “Are you crying?” Scott simply lay beneath her, his face still half pressed into the sheets.

Lifting herself off his softening cock, Scott’s cum began to drip out of her, and onto him. Out of nowhere, Scott shrunk a few inches beneath her. Jackie couldn’t believe it, she was completely shocked that he’d suddenly shrink after they had sex. Equally surprised, Scott gazed up at her, catching her maniacal grin.