Billy wanted to laugh at the show that the two women were giving him, and he felt his cock responding to it. He watched Lace crawl up and kneel between Sonya's legs and pull at the string before the exchange. He had his own ideas though, and slipped off of the bed while they were occupied. He moved to the bottom of the bed behind Lace and admired the bare ass and puffy folds of her sex for a moment before carefully crawling back onto the bed. he was hard again and ready to do something himself. He ran his hands along Lace's asscheeks as he slipped up behind her and touched her with the tip of his shaft. "Surprise." he said into her ear as he reached down and adjusted himself and began to press his head against her pussy opening.