He couldn't hold back any longer. Watson might've had a chance to carry on a minute or two longer if it hadn't been for the teeth on his shoulder, the sharpness and the heat and moisture of Holmes's mouth on sensitive skin. But it had been too long, and with it, it was the last thing he needed to push him over the edge.

Watson gave a strangled, gratified, wordless cry as he tipped over into his release, still clutching at Holmes by his shirt; he turned his head to catch Holmes's ear between his lips while he continued stroking his cock, somewhat more urgently.