I used to work in a drugstore next to a small sandwich shop where I got my dinner. I always got the grilled cheese sandwich, cheapest thing on the menu (college days, lol)
The owner, who was an immigrant from Greece, would always ask "Lettuce, tomato?" which I thought was odd but that he probably asked on all sandwiches. After a few times I said OK to the tomato and discovered how much I like a grilled cheese and tomato sandwich!!