It took every single bit of Sherlock's willpower to not reach down and touch himself. If he did, it would literally take him just a few seconds for him to fall over the edge, and he didn't want to yet.. though he still wasn't sure if he was going to come untouched.. it was still in the cards as well.

"Johnnn.... fuckk... harder..." he begged, biting his lip hard enough to feel coppery blood.