Part of me was irrationally concerned that Grace took her change blindness game so far as to have a tail at some non-canon point before this non-canon story.
I mean, yes, take the "non-canon" parts out of that sentence, and suddenly that concern becomes rational, but what with it being there, just go with it, me. For goodness sake.
I originally had Duck say "for Glob's sake" as an Adventure Time reference (and because it's something I've taken to saying myself), but given that it's a reference, I decided it would be needlessly confusing for anyone unfamiliar with it. I still sorta prefer him saying Glob, but needlessly confusing things are, by their very nature, needlessly confusing, so no Glob. 'Tis sad, I know.