My stepsister and I share the same bedroom and we sleep on the bunk bed. She sleeps on top and I use the bottom bunk. She likes to sleep wearing just a sexy tank top and her cotton panties as she looks so fucking hot that I just can’t help masturbating myself. Apparently, she woke up in the middle of my masturbatory session and noticed me masturbating on the bottom bunk. It got herself turned on, she couldn’t help pulling her cotton panties aside and masturbating too. I heard the noises over my head and took a peek. There she was, spread legged and rubbing her pink clam with her top pulled over her titties, groping and squeezing them with her free hand. She looked so fucking hot and sexy! When she looked over her shoulder and saw me spying on her it was pretty obvious that we were both masturbating to each other. My cock was still as hard as a motherfucking rock, and now my sexy stepsister was teasing me with that juicy brown bubble butt in cotton panties. I pulled them down and began fingering her snatch. She took my hard cock in her hands, sucking and stroking it, deep throating it all the way down to my balls. Holding on tight to the upper deck, she squat over my cock and pushed her body down against it, riding me in reverse cowgirl. I stripped her naked and made her bounce up and down my rod, bending her over the bunk bed’s tiny ladder and fucking her dripping wet snatch from behind. I put her down on all fours and banged her doggy style. Fucking my stepsister was much hotter than masturbating to her!