My step-sister was a total klepto, always swiping my stuff. But today, she was gonna learn that some things you just don't touch. I went to confront her, but found her in step-mom's room instead. The little thief was on their bed, legs spread, fucking her own pussy with step-mom's dildo while pressing a wand against her clit. I pulled out my phone and started filming, my own cock getting rock hard as I watched. Precum leaked from the tip, and I started tugging on it, stroking my shaft to the sight of my step-sister getting herself off. She must've heard something, because I had to scramble out of there before she saw me. Later, I cornered her with a small, wrapped gift bag. "An early Christmas present," I smirked. She looked hesitant but took it, her expression turning to one of pure shock and disgust when she reached inside and pulled out my rock-hard cock. That's when I showed her the video on my phone. "I've heard you're pretty 'gifted' from the guys at school. Let's see if it's true." Her face went white. She reluctantly agreed to suck my cock if I deleted the video. But she got more than she bargained for. I grabbed her hair and shoved my shaft down her throat, making her gag. "Suck my balls," I grunted, pushing them into her mouth. "And stick your tongue up my ass!" She obeyed, crying and humiliated. Just when she thought her ordeal was over, I threw her on all fours. "Time for your main present." I rammed my cock into her tight cunt. She screamed, a real, pained scream. I looked down and saw red liquid. My own step-sister was a virgin, and I just popped her cherry. "Please don't cum in me!" she sobbed. But her crying, virgin pussy felt so fucking good I couldn't stop. I unleashed a thick load, pumping her full with every thrust as she screamed "no!" Finally, I pulled out to see my cum mixed with her fresh cherry-juice. She'd done good enough for today. I deleted the video just as I heard step-mom's car pull into the driveway.