Jack found himself laughing, just slightly against the Doctor's lips, because from the vague sense from his mind he got he had the feeling he was being compared to something that was about as far away from sexy as he could imagine. But then there was something utterly wonderful in just precisely what the Doctor did find sexy. He didn't really mind or matter what, he was just good to be on that list.

"Oh you better be careful saying things like that," Jack smirked, "I'll hold you to it." And then, almost idly, "Have you ever had sex on the console? Because, you know, I think we should."

His smirk grew even wider as he heard the Doctor in his head and he leaned in for yet another kiss.

On now there's an offer I would never refuse.