If someone says to you they want "just a plain hamburger with just ketchup", what would you put on it?
Would you put cheese on it? Pickles? Or just ketchup?
It seems like people at fast food restaurants don't understand unless you clarify and draw it out for them.... I asked for a plain burger with just ketchup and they put cheese on it. What would you have put on it if you were making it for a customer?