Based on the context and the answer, generate a question. 

Context: When you 're in a foreign country , here 's a fun game to play . Speak English among yourselves , even if you know the local language . That way , when the locals start badmouthing you or saying rude things about Americans , you can give them a good scare .

Answer:

They wanted to anger foreigners in other countries .



What may be the reason for this advice ?