When I was a kid my boychoir hosted a choir from Estonia (this was before the fall of the Iron Curtain, so this was a big deal), and I remember when I was trying to help out back-stage at their concert and one of the Estonian boys needed help, but the only thing he could say was "I don't speak English", in a perfect midwestern accent (the Estonian choir director had drilled his entire choir on that one phrase). The cognitive dissonance was hard to deal with.