It didn't sound as mean in the Doctor's head, because it wasn't really that mean. The Cajun, though, already felt like a petulant child, and thus was sort of using the Doctor's look to scold himself, in a way. But when the Time Lord answered that he knew, Gambit smiled and moved himself a step to the side, slowly coming to stand directly in front of the taller (slightly, now) Doctor, leaning his lower abdomen and hips against the other man's legs, pressing his thighs against his tapping feet, to halt them. And both of his hands came down to rest warmly on those suited thighs.
"So strange t' hear you bein' quie'. Cat go' y' tongue, Docteur?" Those words were nearly purred out, but he didn't lean his torso any closer, or he wasn't going to be able to hold himself back. he was going to want to lean in and take something he'd been missing over the past two days.