Oswald laughs, his head head bowed a little, subconsciously hiding the fondness that he will deny to himself is so easily accessible even now before looking up again with a smile.

"That it does! Though sometimes, it really is the only acceptable response."

In that regard, Oswald feels less concerned about keeping hold of the knife for the time being, either until he's more settled and better armed himself, or Ed asks for it back. In any case, it's a pretty valuable item to keep on him.