Watson made a small sound that he was entirely incapable of preventing. Whatever else this interlude was doing, it was very effectively taking his mind off of everything extraneous, and that was exactly what he needed. He was aware of exactly two things; Holmes's cock in his mouth, and his in Holmes's, and that was more than enough. There was no room in his head left to be hurting.

With his fingers of one hand still firmly on Holmes's hip, the others splayed over his stomach, he took Holmes's cock deep into his mouth, moaning a little as he did so.