Despite the spontaneous suddenness with which she had started it and he had embraced it, the monumental significance of their very first vaginal coupling became undeniably evident as Michelle continued her snuggling motion toward Tyler, pressing her big rack more firmly against his chest and thus leading more of his huge dick to ease its way into her pristine, nectar-soaked slit. Hugging and panting into one another's gaping mouth, the siblings couldn't help but pause right there, with just Tyler's cockhead and an inch of his fat shaft sheathed inside Michelle's snug pussy, at the very threshold of another big first for both of them, one they both knew to...