The first bit is a standard reaction, really, although usually accompanied by a lot more shouting. The second piece of information, coming out almost unintentionally, tells Skulduggery everything he needs to know about the newcomer's unfortunate situation.

"There's no helping it, I'm afraid. I've been over it a few times now, and I've decided I must be real. I'm called Skulduggery Pleasant. How long have you been aboard, and how much water have you had today?"