Andrew was almost drooling as he watched what was happening. If girls always acted like this around each other, well, he wanted his sisters to have sleepovers every night! His hand continued to rub his erection as Jo finished and his Twin took over. He didn't even hesitate, his eyes following her every movement as she started on the pants she was wearing. His pants, of course, but he had long ago given up on preventing his twin from stealing his clothes. He still didn't know why she always wanted to wear them, but just this moment he didn't care - she seemed very eager to take them off.<br/><br/>He was unaware that his presence had been detected, but as he shifted his eyes to Jo's perk rear as she laid down near to the archway, his eyes nearly popped out of his head as she pulled her panties to the side, revealing her shaved pussy that he had jerked off to many times before online. He quietly unzipped the zipper of his shorts, finally freeing his straining erection. He almost moaned in pleasure as it gained its freedom, but bit his lip to prevent himself from doing so.<br/><br/>His barehand soon found his shaft, slowly starting to stroke himself properly, his eyes mostly fixated on Jo's slit, occasionally glancing over to see what his twin was doing - though her show was nearly as good as Jo's.