Brings to mind many years ago in a small eatery in country Norfolk, UK where, amongst other items of fare, the menu offered both cheese & tomato sandwiches and slices of toast. I requested a toasted cheese & tomato sandwich and was advised by the lady behind the counter that it wasn't possible because it wasn't offered on the menu. No amount of persuasion (or what I thought, logic) was able to change her mind. I could only assume that the completed sandwich wouldn't fit into her toaster. 40 years on and I still laugh when I think of it.