Stepsister gone crazy, sex on public beach goes terribly wrong [Crazy]

The sun beat down on the sandy shore, a stark contrast to the icy stare of my stepsister, Lisa. She’d been acting strange all day, her eyes wild and hungry. We’d been playing a dangerous game of cat and mouse, her teasing me with her barely-there bikini, ass cheeks hanging out, tits practically spilling from the flimsy triangles. She’d bent over to adjust her strap, giving me a clear view of her glistening pussy lips, swollen and ready. I couldn’t take it anymore. I grabbed her roughly, spinning her around, and shoved her down onto the towel. Her eyes flared with a mix of surprise and lust as I yanked her bikini bottom to the side, exposing her dripping cunt. I didn’t waste time, plunging my fingers deep into her wetness, fucking her hard with them while my thumb circled her clit. She moaned loudly, not giving a fuck about the nearby sunbathers. I could feel her juices coating my hand, her body writhing beneath me. I leaned down, biting her nipple through the fabric, making her scream. Suddenly, she pushed me off, a wicked grin on her face. “Not so fast, big brother,” she purred, flipping herself over and presenting her ass to me. She reached back, spreading her cheeks, revealing her tight little asshole. “Fuck me here,” she demanded, looking back at me with a crazy glint in her eyes. I hesitated for a moment, but the sight of her spread open like that, begging for it, pushed me over the edge. I spit on her asshole, rubbing it in with my thumb before lining up my cock. I pushed in slowly, inch by inch, until I was fully seated in her tight ass. She groaned, a mix of pain and pleasure, as I began to fuck her, hard and deep, the sound of flesh slapping against flesh echoing across the beach. I could feel her body tensing, her muscles clenching around my cock as she came, her screams of pleasure filling the air. I grabbed her hips, pulling her back onto my cock as I came, filling her ass with my hot cum. We collapsed onto the towel, breathless and spent, the crazy intensity of our fuck still hanging in the air. But our public beach fuck had attracted unwanted attention. A group of angry beachgoers approached, their faces twisted in disgust and rage. Shit, this was about to get ugly.