John can feel the twisting deep inside of himself as Sherlock tells him to go on. He gives the other's pants a tug, pulling them down slowly. Torture? Maybe, that could easily be what's on John's mind. He enjoys being in control of the situation. And right now, he feels like he might just have all of the power.
As he finally works his pants down past Sherlock's hips, he continues pulling them down, shifting over the other to get out of the way. Once the pants are down past his knees, John stops and comes back to Sherlock's stomach, kissing again, and teasing his hands downwards, but still not touching Sherlock anywhere below his hips.