It doesn't seem to faze him, and Jack absorbs that too, before chuckling at the question. "Well, I'm not a vampire, but I got turned immortal so I guess there are some similarities. A different kind of immortal, though. I can still die - I died that first time - but I come back, every time." He shrugs. "Not that even that's unique any more, not here, but it does mean I've lived over a century and a half so I've managed to accumulate a fair bit of experience, at least!"