A Knife with a Sheath???

One of our much loved "spokes" very kindly cooked a banana cake for morning tea on our recent "Field of Lights" trip to Albany. She was bemoaning whilst we ate that the knife wasn't very sharp, so the cake pieces were crumbly. One smart one, who we won't name, noticed icing oozing from the slots in the sheath which was still on the knife......."It helps if you take the cover off", she remarked not sarcastically of course! We will mention that a couple of other spokes also used the knife in it's blunt state!! Hard to live that one down!