Other mistake: In one shot, a man is leaning over Feng and speaking in Chinese to him. The woman sitting next to Feng translates and says that it means the man has to go to the bathroom. Feng explains where it is and sits down. After, it switches shots to show the man leaving Feng's "throne" in the backround and sitting down, not going to the bathroom.
Balls of Fury (2007)
1 other mistake
Directed by: Robert Ben Garant
Starring: Christopher Walken, Maggie Q, Dan Fogler, George Lopez
Factual error: Karl Wolfschtagg's Olympic uniform should have read 'DDR' (Deutsche Demokratische Republik, the German name) rather than 'GDR', the English name for East Germany. Olympic country names are customarily rendered in their native language.