Could depression be explained any better? Well I am sure it could, but usually I don’t get metaphors. This one I get!
Picture from here.
Though to be honest… I think you probably could peel both potatoes if you spent long enough rubbing them together with their skins wet? It would take hours, your hands would hurt, you’d be crying long before any peeling started. But I think it’d somehow be possible based on friction alone? … At least to tear the potato skin a bit? 😉