Everyone who wants a black coffee says "Black Coffee" or "Coffee, Black", the word 'black' is the keyword here for how you get your coffee. When a worker hears "Coffee, no cream, no sugar" what they're actually hearing is 'Coffee' 'Cream' and 'Sugar', the no isn't a keyword to them and you'll get a coffee with one cream and one sugar just because you said the words. Without those words, you'd have gotten what you wanted.<p>When you can say in 2 words exactly what you want, you shouldn't be using 5.