I speak English Well

I lived in Japan for one year, teaching English, years ago.  It was one of the best experiences of my life.  While I was there,  I met one of my cousin's Asian friends who was also living in Japan for a year.  She said she used to mess with people on the trains.  She and her Asian friend from the U.S., they both looked Japanese, would say, "Let's practice our English" and then they would proceed to have an entire conversation in English, but of course their English was fantastic since they spoke in English all the time in the United States.  They would get major stares of admiration on those trains!