Below is an anecdote that contains a kernel of truth....
A:So if a person speaks 3 languages, they are trilingual, and if they speak 2 languages, they are bilingual....but what do we call someone who speaks only one language?
B:An American?
A:LOL!!!
Its true; If they know they are dealing with another Country, the Japanese are the last ones to be caught unprepared. Though, you will score points with what ya got there.....