[He doesn't theatrically gasp at this terrible affront to their best friend Bernardin the ghost boy, but he does put a hand over his heart like oh no honey I'm so sorry she would say something like that.]

I cannot claim I have met many ghosts besides our little Bernardin, no! But who knows! Perhaps I have without even knowing it.

[Does that make him more or less an expert? Anyway, maybe his childhood home was haunted and he just assumed those people were all real! Who knows. This is a more interesting narrative than his actual childhood, he thinks.]

Befriending a single ghost is nothing to scoff at, besides.