After enjoying outdoor exposure with my step-sister using a remote-controlled vibrator, we checked into a hotel. As soon as I turned on the vibrator at the entrance, she started moaning loudly, almost loud enough for people outside to hear. When I told her to masturbate right there, her body twitched violently as she grew increasingly aroused. Direct stimulation on her clit made her scream uncontrollably—"Please, hurt me!"—"I'm cumming, cumming, CUMMING!" I led her to the room's window and told her to undress, and although she protested, "Someone will see us!", her body trembled with excitement, revealing her deeply masochistic nature. The thrill of being watched turned her on instantly—her nipples hardened at just a touch, and her pussy became soaked. As she grew more aroused, she begged, "I want your cock," reaching for me, so I blindfolded her and cuffed her hands to heighten her sensitivity. Turning the vibrator back on made her convulse again, clearly overwhelmed with pleasure. When I pulled the vibrator out, it was dripping with so much slick arousal it left strings behind (lol). Deprived of sight, even the slightest touch made her scream louder than usual. "Touch me more," she pleaded, and when I applied a violet wand, she instantly arched like a shrimp, screaming, "No, no, I'm cumming!" My cock was rock hard. Spanking her ass made her moan, "It feels so good," even as she cried out, "No, no, I can't take it!"—orgasming repeatedly while begging, "I can't hold back anymore, I want to suck your cock," a total masochistic pervert. I denied her touch and teased her with fingering instead, making her squirt massive amounts of fluid, climaxing over and over. She kept saying, "I want to suck it," then deepthroated me on her own, giving me an intense blowjob. As a reward, I finally let her have my cock, and she went wild, moaning, "It feels so amazing!" Excited, I wanted to torment her even more—standing near the window where we'd clearly be seen, I took her from behind. Every time someone passed by outside, she tightened her pussy around my cock, proving just how depraved she was. I grew so turned on that I switched to missionary and pounded her hard, then asked, "Which feels better—my cock or your brother's?" When she said, "Yours is better," I got so excited I thrust even deeper. Her slippery, tight pussy squeezed me intensely, and I couldn't hold back—I erupted a huge load of cum straight into her belly. Then she begged, "Next time, I want you to cum inside me..." So I guess I'll have to do just that (lol).