Sam looked up at his sister as she moved. He would have smiled if his mouth could move, but his eyes said how much he loved her and cherished her and thrived at her every touch! He tried to do what Clarissa instructed, wiggling his tongue about as much as he could, but it was pressed so tightly against the bottom of his mouth that he wasn't sure if Johnny could even feel it other than a wiggly sensation against a bit of his shaft. He continued to let his throat massage the head of that big cock, but he was at a loss of what else he could do!<br/><br/>He made a highly muffled noise as Clarissa's wonderful soft hands stroked his dick! She could feel it twitch in her hands and almost cum right then and there! But he forced himself to hold off, having the feeling that both of them would be disappointed in him if he were to cum before the guy he was servicing did! He made another indecipherable noise as Johnny told him he'd have multiple loads to eat. Whether it was desperation or greed or some mix of both who could say.<br/><br/>He had only one thought of what to do. Just one trick in all the things Clarissa had showed him. He started to hum. Deep in his throat a vibration began, buzzing all around the cock that was jammed inside of him, buzzing so that it felt like every inch of it was wrapped in a soft and fleshy, warm and welcoming massage chair. He closed his eyes and hummed as loud as he could, wiggling his tongue as he did and coaxing that cock to cum so that he could finally too!