Distantly he realizes he's half won the challenge. It was never going to be a challenge, truly, and he knows that, but regardless it's worth noting that next he needs to make Watson be loud. This shallow, preliminary rhythm he's slipped into for the moment is hardly going to do anything at all to move Holmes toward his goal.

He moves his hand from Watson's hip to the back of his knee, hitching his leg up and giving Holmes a better angle from which to fuck Watson with a faster, hungrier pace. He can't help groaning then, tilting his head back for a moment with his eyes shut tight. His breath is coming in ragged bursts as he catches Watson's half-lidded eyes, and he leans in to give him a brief kiss.