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S2E9 "Charlie Goes America All Over Everybody's Ass": at the end of the episode, there's a game of Russian roulette that references "The Deer Hunter". In the scene, Frank wears a pair of glasses where one lens is blacked out.

I'm certain this is a reference to something - it's not the scene in "Deer Hunter", I just rewatched to make sure - but I can't figure out what it is. Any ideas?