"See...you are making expressions I am certain I have never made. And I have been suspended from a hook, through that very point on your shoulder I just released."

It's so terribly fascinating. And Holmes doesn't get any thrill from battering the helpless, but Sherlock is not helpless. He is no victim. So what that makes this, he oesnt know, except that yes: he is enjoying it.

Enough to hook one leg over Sherlock's shoulder while the other presses his ribs. By yanking the man's arm just so, he can flip them over into a classical Greco-Roman hold. It won't hurt nearly as much as the pressure points, and it's more easily fought.