Watson's embarrassment is as alluring -- though for different reasons -- as the image of him engaging in such an activity. He can very clearly call to mind an idea as to how Watson looks when he's pleasuring himself in such a way, and it's certainly nothing to be ashamed of, especially not when the person in question emanates lust and passion while he's at it.

Cupping Watson's neck, he kisses Watson fiercely, almost hungrily; his lustful confidence is quickly returning to him, he's almost surprised to say. He really shouldn't underestimate Watson's ability to bring Holmes out of his doldrums.

"Terribly sorry you had to manage that all on your own," he murmurs, his voice thicker now. "Might I offer some reparations?"