Grinning to himself, Tyler ate Michelle's asshole out and diddled her sweet pussy with renewed vigor, feeling a weird sense of accomplishment grow inside him as he brought his sister to climax after gushing climax with his mouth and fingers. It was such an indescribable feeling to make the girl he loved the most in the world cum screaming into her pillow again and again like that, and, Tyler thought with mounting anticipation, he was only fucking Michelle's ass with his tongue! How much was she going to cum once he crammed his big fat dick inside her butt, he wondered...

Egged on by that thought, not to mention the...