Drew was too focused on watching his naked, older sister to realize that he wasn't home alone with her. One hand continued to squeeze his full balls while the other stroked over his hardness. He closed his eyes, picturing Ashley wrapping her hand around his cock, jerking him off just like he was doing right now. His imagination was extremely good as it actually felt like she had just wrapped her hand around his cock. It was only when he felt the other arm wrap around his waist and the voice of his mother that he realized it was not his imagination!<br/><br/>He nearly jumps out of his skin, eyes flying open, as her words register in his brain, his hands dropping from his arousal to drop to his side. His motion does cause him to press back against her, feeling her breasts pressing into his naked back. He had always thought his mom was hot, constantly teased by the other boys at school. Though he denied she was hot to them, he secretly agreed that she was hot. But this, he had never expected this! His thick, hard cock twitched in her hand, even as his naked sister slipped out of the pool.<br/><br/>"I..I wasn't!" He stammers, unable to pull himself from her grasp. He was hot and horny and having  some one else's warm, firm hand on his hardness was not something so easily shaken off. "What..what are you..doing?" He counters, heart hammering, though he makes no move to disengage her hand from his arousal as she kisses his back.