Zazie Beetz is of German descent in real life. Her father is German and the actress was born in Berlin, Germany. She is also fluent in German as depicted in this episode.
The episode title refers to a Bavarian-themed town in the state of Georgia.
The initial dialogue between Van and Ben goes as follows, after Ben asks "What can I get you?". Van says "A round of beer, please, for the group back there." Ben then asks "You speak German?" to which Van replies "Yeah, but just me." Ben asks "He doesn't?" to which Van replies "No, he doesn't speak German." Ben then jokingly says "Okay, it'll be our secret language then." resulting in Van laughing. Earn laughs too and Van asks him in English if he understood it, which he says he didn't. Ben then says "He doesn't speak German at all?" to which Van replies "No, nothing. He doesn't understand it either." Ben then asks "Why is he wearing such a stupid mask?", which Earn recognizes ("Mask, perhaps?"). Van then replies "Well..." resulting in Ben saying "Right! Except you." Van then says "Yeah, just bought it recently. And you? Are those real Lederhosen?" to which Ben replies "Yes, those are real Lederhosen. Real Bavarian." Earn then kills the conversation. After that Van says "Sorry." to Ben, who replies "It's okay."