Fun as the sex is, I think my favorite part is when Severus is being watched unawares. Love this section, especially the last line: Water jetted from a snake's head faucet to bounce off Snape's shoulders and run in rivulets over his arse and down his legs. Droplets trickled from the end of his nose, the points of his elbows, the tip of his soft cock. Seen undressed, Snape was every bit as skinny, pale, and awkward as Remus had expected and ten times more arousing than he had ever imagined.