Watson shut his eyes, trying to get used to the feel of the fireplace against his bare back. Past words now, he could only kiss back, equally hungry, while he made some slightly more serious attempts at undressing Holmes. Slightly.

Objectively, this was mad. If someone were to arrive, then, it would be extremely awkward, difficult to find the time to cover themselves up again and pretend nothing was amiss, but somehow, just then, that possibility seemed very remote and unimportant.