That motion is a bit like dirty pool all on its own (not that John has room to talk with phrasing like that) and he can't help but echo Q's moan over the proximity of it all. He dips a little closer yet -- as much as he can with his hand being both busy and in the way - and it's all a bit too much because it's just not enough.
"Fuck," he says, and it is both a statement of intent and a bit of a pleased sounding curse.