For once, Kurapika sees no need to reply to that right away - not verbally, anyway. Instead, he just lets out a soft snort and then presses forward again, pointedly catching Leorio's lip between his teeth.

"Look who's talking." The same kind of phrasing he might use to insult Leorio under different circumstances, but. Here they are. He's kind of breathless, as well, as he says it, but he twists his fingers inside Leorio as if to compensate.