"Ahhh, fuck." He knew this man was good. Sherlock was not, unless in the context of talking down to a sub, one for cursing. But this man, oh he was good.

"Nnng... Yes.. No need to rush.. Just enjoy my head for a bit. Explore it, get to know it. I have a feeling you will know it quite intimately soon, and hopefully for a long time." Yes, he definitely wants to see this slave again. Soon. And often.

John was rewarded with a bit of pre leaking from Sherlock's slit, just a little taste of what was sure to come.