"You... want to get punished." Sherlock somewhat more gently, though still with his foot, tapped at John's cock.

Then he smiled, an actual smile, and chuckled lightly. "Well, that leaves me with a bit of a conundrum then." He said, his face going serious again. If I punish you, then you will get what you want, but if I don't punish you, then you won't get the point that what you did was unacceptable, and that I am quite disappointed in you."

He started walking around John again. "So.. what to do about this interesting problem then, I wonder.." He stroke his chin as he circled around the kneeling man.