After my mission, I lived with my grandmother and worked as a waitress in a motel restaurant in town. There was only myself, and the cook working at any given time, and we didn't get too many customers, but still my duties were light. I had to make coffee. Being Mormon I knew nothing about making coffee, but no one complained about the coffee I made. I also attended to the customers.
One night some foreigners came in to the restaurant. They had a German accent, but still spoke pretty good english. They asked me about the menu, and I told them that the dinner came with "dessert of the day", which happened that day to be ice cream. What I didn't tell them was that every day the dessert of the day was the same; a scoop of ice cream. They ordered a meal that came with the dessert of the day.
Their dinner was plated up, and I took it out to them. When I placed it in front of them, one of the men gasped and said, "You put it on the same plate!" He was looking at the mashed potatoes. I said, "We usually do, but if you don't want it there, I can put it in a separate bowl for you." His companion said, "No, no, it's fine the way it is." His friend's expression showed differently. But since he made no more complaint, I left it on his plate.
A little while later I was passing by and the man called me over. He said, "I have to apoligize for earlier. I thought the potatoes were my ice cream." :)