[Barnaby's amusement quickly turns into a flat look, aimed directly at Emet-Selch. (Made slightly less effective when it's interrupted to cough, thanks spores.) For now, Sophia's chipper suggestion goes ignored.]

I know you said we're not in danger, but aren't you being unnecessarily difficult about this? If you let us borrow the knife, we can get this over with and be out of here sooner.

[Maybe he wants them both to tear their hair out over this, literally and metaphorically...]