Snape wonders if Draco has any idea how gorgeous he looks like this, laid out for him and with legs spread, shaking and gasping for air, blue eyes wide. He flicks his tongue over the head again slowly, drawing it along the slit, distracting him as one finger slowly becomes two.

He's pressing in again, two fingers sliding in and curling forwards, and he moves down, taking more of Draco's cock into his mouth, feeling the soft skin of the head brushing over the roof of his mouth, the ends of his hair brushing over Draco's skin. He hums softly, the sound dark and low; he's enjoying himself. Enjoying Draco's body, the taste, how he feels in his mouth, and how he looks as he comes undone. He's moving slowly, not moving his fingers hard or fast, but enough to ease him into this. Now and again, he spread them slowly, making it easier, so that as two became three it wasn't such a stretch.