Continuity mistake: When Kurt goes grocery shopping for Xian, some kids splash him with water from the pump. During the entire rest of the scene, the water marks on his shirt keep changing size and shape, and grow quite considerably from the first small sprinkle. In addition, the back of his shirt is completely dry when he goes up to the store, but when the fight breaks out, almost all of his back is wet, and these stains also change shape from one moment to the next.
Continuity mistake: When Kurt gets into a fight orchestrated by Xian Chow at the bar, one guy smashes a glass against a table and holds it in his hand. In the very next shot of him, before Kurt kicks him, the glass is gone. (00:57:03)
Answer: He didn't want to use his real name.