"Yeah, don't blame you with that whole..." He gestures around his own face with one hand. "...thing. What's up with that, anyway? I thought vampires were just supposed to have retractable fangs, not retractable...whatever that was. No offense, of course."

Stefan understood perfectly, though. His own version of a 'vampire face' would come out to play whenever he got angry or generally emotionally intense, when he was feeding or when there was the scent of blood on the air. It was instinctive and sometimes took a moment to shut back off when something turned it on.