Amy's hand moved up to the waist of his jeans. Grinning up at him, she undid the top button. Mark groaned in response, feeling the slight lessening of the pressure against his cock. Her agile fingers moved rapidly, undoing each button as she went down. Her free hand rubbed against the underwear that was exposed by her other hand, and brought great feelings of pleasure to Mark's now fully throbbing erection.
"That looks even better close up." Amy giggled, finishing unbuttoning his pants. Her hands ran over Mark's undershorts, stroking his cock through them. Mark could do nothing but gasp, the feelings that he should stop her almost overpowering him, but he was unable to stop her from pleasuring him. With a slight tug, Amy lowered the elastic of his shorts, revealing his bulging purple cockhead.
Amy smiled, and leaned forward, giving a little lick to the tip. Mark shook with the feeling, unable to belive that his sexy sister was putting her mouth on his cock. Amy, encouraged by his reaction, slid the underwear down further, exposing more of his big dick to her appraising eyes.
Amy began to lick gently at the underside of the mushroom. Her tounge, only barely making contact, felt like an electric wire to Mark, who writhed, aching for more contact. Uncaring of his desire, Amy continued to tease him, using her lips occasionally, and once in a while dragging her fingers along his shaft.
Unable to take any more, Mark's hands enclosed Amy's head. He pulled her forward, and she eagerly slipped her lips around the head of his cock. She sucked gently, as her hand encircled his shaft and began to pump gently. I'm getting head from my sister, Mark thought, amazed at how good she was at blowing him. Her mouth felt like a tight little glove that just happened to be able to suck. If she kept up this pace, there was no way he would be able to hold off from coming.
Amy seemed to sense his impending climax, and sucked harder, her hand gliding up and down his shaft rapidly. Mark did want to come, but he started thinking about his sister's pussy, and how good it would feel to be inside it. |