Oh, this was going to be fun. Sherlock smiled. He normally would never even think about doing this kind of thing for anyone, but John.. well. he was John. HIS John.

Sherlock dipped his head down, licking and biting at John's neck, finding all the places that he knew had made the man shiver.. at least in his former life. His arms down John's sides and played with his thighs, so close but not quite touching the prize.