Have you ever been in a position where you needed a quick break but your players were too ancy to break as well?
When dealing with nobility and court settings, players can sometimes skip the roleplay aspect and jump straight to behavior such as, "I bow, greet all in the court, and ask the duke for his assistance." While in most scenarios this type of action is sufficient, taking it a step further can enhance gameplay (or maybe even manipulate a plotline).
A nation was conquered and the conquerers took control and put themselves in all positions of authority. One major problem, the new rulers and the now peasant/ruled class speak entirely different languages.