She couldn't help but laugh! Her boyfriend had fought her every step of the way. He kept insisting that he was "all man" even when it was so obvious to her that he was "all sissy"!
From the makeup and nail polish all the way to kneeling down and taking that first taste of cock, he had fought and argued! But once that cock was in his mouth he just couldn't get enough!
Her laughter was lost on him, he was indulging his deepest fantasy and he hoped she believed it was all her idea!
It didn't matter...nothing mattered except the big throbbing cock in his mouth!