"Shhhh.." Sherlock said, loud enough for John to hear, but still leaning into his arse. "You don't want Mrs. Hudson to come up and see this... do you?" The way he said it, he didn't really sound like he was worried about it in the least. In fact, he sounded quite turned on by the idea that they were alone, but anyone could walk in.

His tongue went back in, flicking around the very inside of John, while one hand left his arse cheek and teased around John's perineum, and around the base of his balls, but not to his cock, not yet.