Lucas massaged her butt cheeks as he pondered the challenge. He caught the fabric of her skirt in his fingers. "So, if I decided I... wanted to lift your skirt...?" He gave her some time to protest, and when she hadn't, he drew the skirt up until it no longer covered her backside. A breath caught in his throat when his palms contacted the bare flesh of her spectacular ass. He wasn't expecting that. Was she going commando, he asked himself. He received his answer a second later when his thumb traced the length of a string that ran along her ass crease. His little sis was rocking a G-string again. Skylar rose to her tiptoes and arched her back, sticking out her buns for him to fondle. His touch, light and hesitant at first, grew more daring, and he was soon confidently kneading the eighte

